Fishkeeping

Start your fishkeeping journey with my beginner-friendly guides and articles! Learn how to set up an aquarium step by step and how to take care of your underwater kingdom.

Chemical Filtration: removing what other filters don’t?

When we talk about filtration in fishkeeping, people often say that the third step is chemical filtration. But do you really need chemical filtration in your aquarium? Below, I will explain when you might use chemical filtration and if it is truly necessary. What is chemical filtration? It is one of the types of filtration…

8 Facts About Aquarium Shrimp

Fish don’t have to be the only residents in an aquarium. You can also keep small shrimp, crayfish, tiny frogs, and snails in it. Among them, shrimp are the most popular. These tiny crustaceans have become very popular with aquarium enthusiasts. More and more new species are being imported, and breeders are constantly creating new…

Mechanical filtration: Types of mechanical filter media

Mechanical and biological filtrations are both important for maintaining a healthy aquarium. While you might manage without chemical filtration, you really can't overlook the importance of mechanical and biological filtration—they work hand in hand. Even though biological filtration plays a key role, skipping mechanical filtration could lead to poor water quality. Below, I'll explain what…

Biological filtration – the living aquarium filter – how it works?

Did you know that your filter is alive? Yep, it's true! Those good bacteria in the filter keep your aquarium clean and healthy. Without them, it would be a mess! Biological filtration has a huge impact on water quality. The bacteria in the filter are responsible for removing nasty substances in the water. In this…

7 common reasons why your aquarium smells bad and how to fix it

Do you notice a bad smell coming from your fish tank? It could mean there's a problem with your aquarium. A well-maintained aquarium should not have any bad odor. There are many reasons that can cause a bad odor from your aquarium. Here, I'll talk about why your aquarium might smell bad and how you…

What happens if you put too much dechlorinator in your fish tank?

The water condition is crucial to fish health when you introduce fish to you aquarium for the first time. The water conditions may determine whether your fish acclimatize or simply die. To improve the water condition in the tank, aquarists choose dechlorination. Many beginners ask me what will happen if we put too much of…

How to remove calcium buildup on fish tank?

Calcium accumulation in the aquarium makes it look ugly. It may also affect the health of your fish. The ability to remove calcium buildup from an aquarium is a must for every aquarist. Below I present you the simplest ways to remove calcium buildup in the aquarium. You may have heard of one with it,…

Why isn’t my filter pumping water?

The filter is an essential tool for every aquarium. It provides benefits not only to you but above all to the inhabitants of the tank. Its main task is to clean the water and break down substances harmful to fish. The filter must operate 24 hours a day and should not be turned off. You…

How to stop fish jumping out of tank?

Have you ever witnessed fish jumping out of a tank? In their natural habitat, fish often do this to escape danger and relocate or to move to another location. If the fish falls to the ground, it will die immediately if not moved back into water. How can you prevent this in your fish tank?…

How long can you leave a fish tank filter off?

First, I would like to answer the question: Can I turn off my aquarium filter at all? The answer is no. My answer may seem a bit disappointing now. I'll explain why in a moment. How long can you turn off your filter? I don't think you should turn it off at all. Online you…

How to stop water evaporating from fish tank?

Evaporation is nothing more than the water evaporating. Answering the question of how to stop water evaporation from the aquarium, there is only one answer: you can't do it. It's a process that generally cannot be stopped. It's important to realize that the only thing you can do is take actions to reduce water evaporation.…

Types of Aquarium Snails: Taking the good with the bad

I think you often overlook snails, but they are fascinating creatures that can benefit your tank in many ways. You may say: I don't want to deal with a snail invasion in their aquarium. You're right. This is the biggest nightmare of every fishkeeper. It seems inevitable, in some way or another, to introduce snails…

How to Tell How Many Gallons a Fish Tank Is?

Got a Measuring Tape? Good, You'll Need It! Alright, fellow aquarists and fish whisperers, gather 'round! Today, I am exploring the fascinating world of measuring fish tanks! I know, I know, hold your applause. You might think it’s as simple as asking your fish, but trust me, they're notoriously tight-lipped aboutthese things. The Math-y Bit…
Guide to Setting Up Your Blackwater Aquarium: Easy Tips and Tricks

Guide to Setting Up Your Blackwater Aquarium: Easy Tips and Tricks

Biotope aquariums rank highly among my preferred freshwater setups. They imitate the real-life habitats found in nature. In these tanks, you won't see plastic plants or pink gravel. Many fish keepers enjoy creating a blackwater environment in their tanks. Blackwater, natural to ecosystems such as the Amazon rainforest, offers a unique set of conditions that…
Ich White Spot Disease

Identify and Treat Freshwater Ich (White Spot Disease)

Keeping freshwater fish can be a rewarding and enjoyable hobby, but it comes with its share of challenges, including the occasional outbreak of diseases. One of the most common and notorious afflictions that freshwater fish can suffer from is Ich, also known as White Spot Disease. This pesky parasite can quickly spread throughout your aquarium,…
What fish can live in a 3-gallon tank?

What fish can live in a 3-gallon tank?

Let me break it down simply: if you're wondering whether any fish can live in a 3-gallon tank, the answer is a no. After many years of my experience, I've come to realize that a 3-gallon tank really isn't suitable for fish. Even tiny fish like micro-rasboras would struggle in such a small space. The…
What fish can live in a 1-gallon tank?

What fish can live in a 1-gallon tank?

Let me tell you straight up: when it comes to fish and 1-gallon tanks, the short answer is none. I've come across countless websites claiming that small nano fish or shrimps can make do in such confined spaces, but this simply isn't true. In this article, I’ll explore the truth about 1-gallon tanks. The reality…
Size tank for betta fish

What size tank do betta fish need?

Picking the right tank for our pets is important. For the colorful betta fish, getting a tank that's the right size is key to keeping them healthy and bright. Some say a betta can live in a 1-gallon tank. This is technically true, but it's not the whole story. A betta fish can only survive…
How to test fish tank water

How to test fish tank water?

Maintaining a healthy fish tank is crucial for the wellbeing of fish. One essential aspect of fish tank maintenance is regularly testing the water. This guide will take you through the process of using an aquarium test kit, especially for beginners, to ensure that your fish thrive in a safe environment. What is an aquarium…
How to sanitize fish tank after disease thumbnail

How To Sanitize Fish Tank After Disease?

Dealing with a disease outbreak in your fish tank can be a stressful and concerning experience. To ensure the health and well-being of your aquatic pets, it's crucial to know how to properly sanitize your fish tank after such an event. In this step-by-step guide, I will walk you through the process of effectively sanitizing…

How to kill snails in fish tank?

If you've ever had the pleasure of owning a fish tank, you might be well aware of the tiny, slimy troublemakers known as pest snails. These sneaky creatures can quickly overrun your aquarium, turning it into a snail haven. In this guide, I'll walk you through the ins and outs of how to get rid…

How to acclimate fish to new freshwater tank?

Acclimating fish to a new freshwater tank is a crucial process that requires care and attention. Whether you've just brought home some fish from your local store or received a shipment from afar, the acclimation process can vary depending on several factors. There's a widespread misconception that simply floating the bag in the tank for…

Why are there so many bubbles in my fish tank?

As a devoted fish tank enthusiast, I'm sure you've experienced the curious appearance of bubbles in your aquatic haven. While these bubbles may initially capture your attention and spark your curiosity, you might also find yourself pondering, "Why are there so many bubbles in my fish tank?" Fear not, for I'm here to delve deeper…

How to Keep a Fish Tank Warm Without a Heater?

So, you've got yourself a fish tank, and everything's been swimmingly, but now the heater's gone on the fritz or maybe you're just not into the idea of using one. No worries, because today, I'm going to share some tips on how to keep your fish tank warm without a heater. Let's dive right in!…

How long do you have to wait to put fish in a new tank?

So, you've just set up your shiny new aquarium, and the excitement of adding fish is building. But before you dive into the world of underwater wonders, it's crucial to understand how long you need to wait before introducing fish to your new tank. In this article, I'll explore the essential steps to ensure a…

Fish laying on the bottom of the tank? You must read this!

As a fish enthusiast, I’ve spent countless hours observing my underwater companions in my trusty tank. It's a source of endless fascination and joy. But recently, I noticed something concerning – some of my fish were frequently found laying on the bottom of the tank. This puzzled me and sent me on a quest to…

Activated carbon in your aquarium – how to use?

Activated carbon is a valuable tool in the world of aquarium keeping, offering numerous benefits for your underwater ecosystem. This magical ingredient has the power to eliminate chlorine, removes water discoloration, and even banish unpleasant odors from your aquarium. Whether you're new to fishkeeping or a seasoned aquarist, understanding how to use activated carbon in…

Beginner’s Guide to Fish Food: Exploring the Different Types of Fish Diets

One of the fundamental aspects of keeping fish happy and healthy is providing them with the right kind of food. Just like humans, fish have specific dietary requirements that vary based on their species and habitats. In their natural habitats, fish have the freedom to seek out their preferred nourishment independently. However, the scenario changes…

How Much And How Often Should You Feed Aquarium Fish?

Properly feeding your aquarium fish is not just a matter of dropping in flakes or pellets; it's a nuanced practice that directly impacts the health, vitality, and longevity of your aquatic companions. While the allure of watching your fish dart and glide through the water as they consume their meals is undeniable, the question of…

10 Items You Should Avoid in Your Fish Tank

Setting up a freshwater fish tank can be an exciting and rewarding experience. However, it's crucial to be mindful of what you add to your tank to ensure the health and well-being of your fish. Certain items can be harmful or disruptive to the delicate balance of the aquatic environment. In this article, I will discuss ten things…

How To Start a Planted Fish Tank For Beginners

The best thing you can do for your aquarium is to add live plants to it. Not only do they add a natural and aesthetically pleasing touch to your tank, but they also offer numerous benefits for the overall health and well-being of your fish. One of the key benefits of live plants is that…

How to clean aquarium glass (inside and outside)?

Aquarium hobbyists are often concerned with keeping their tanks clean and maintaining the health and beauty of their aquatic inhabitants. A vital part of aquarium maintenance is ensuring that the glass remains crystal clear. Dirty glass not only blocks the view of the tank's inhabitants, but it can also make the aquarium look unsightly and…

How to setup canister filter? Step by step guide

Canister filters are the best choice for many aquarists. In general, external power filters are much smaller and have less sophisticated filtration and flow control than internal power filters. They’re more convenient to set up and maintain, and don't have as many filter media options and accessories as a canister filter.   Setup an aquarium…

How to add live plants to your aquarium?

Want to liven up your aquarium and add some color? Live plants are a great option! Not only do they provide shelter and oxygen for your fish, but they also create a beautiful aquascape. Adding live plants to your tank can seem daunting, but it's not as hard as you might think. You can add…

Top 8 Causes of Aquarium Oil and Protein Films and How to Fix it!

I peered over the top of my aquarium only to discover that it looked worse than the aftermath of an oil spill. That thick layer of grime just didn't look right. And, I realized it might actually be dangerous to my fish! Today, I am going to teach you where this mysterious oily film comes…

Best fish for a 5-gallon tank

If you have ever wanted to have a beautiful fish tank, you might consider buying 5 gallon tank. You’ll love having your own five-gallon aquarium and adding decorations, plants, and fish. For smaller homes or apartments, a 5 gallon tank could be a smart alternative to a traditional tank. This is because it looks nice…

What temperature should a fish tank be?

Temperature is an abiotic factor of the environment. In natural water reservoirs, the temperature depends on many environmental factors such as insolation, sun exposure, ambient temperature and other external environmental factors that influence the water by increasing or lowering its heat. Temperature has a huge impact on the life of aquatic animals. The optimal temperature…

What size fish tank should I get?

Before buying your first aquarium you should think about several important issues, namely: You know, there is no one-size-fits-all. Let us proceed step by step to explain the most important aspects related to your new hobby.  The size of the tank One of the most important factors to consider when buying a fish tank is…

What kind of water is best for fish tank?

Water is a chemical compound consisting of two hydrogen atoms and one oxygen atom. It is a common solvent for many compounds.  In the case of fish, it provides a living environment for them.  Aquarium water does not only consist of oxygen and hydrogen molecules but also contains a number of other compounds and elements.…
What do I need for fish tank

What do I need for fish tank? Checklist for begginers with Infographic

In setting up a new fish tank there are nearly endless possibilities for creating a beautiful freshwater aquarium. You’ll find that there are many types of products, and countless choices among them, but don’t let this overwhelm you. The prospecting process is confusing, but once you understand the basics, it becomes easier. This setup checklist…

How to safely raise pH in your fish tank?

Keeping your aquarium environment healthy and free of pollutants is very important. Your aquarium should have a stable pH. Before you start adjusting your pH, ask yourself if you really need to. A majority of fish species have some tolerance to changes in their water parameters and it’s important to monitor your water. Most types…
How to lower pH in aquarium

How to safely lower pH in your aquarium?

The pH level has a huge impact on the health of the fish in your tank.High pH levels can harm fish, damage slime coats, cause chemical burns, and increase ammonia toxicity.There are simple methods to lower pH including peat moss, driftwood, CO2, Catappa leaves, chamicals or reverse osmosis units. But remember that regular pH checks…
How to lower a nitrates a fish tank?

How to lower a nitrates in fish tank?

Most aquarists understand the lethal effects of ammonia and nitrite but are unaware of safe nitrate levels in aquarium water. Too much nitrate is harmful for your fish and other tank inhabitants, so make sure to keep your nitrate levels low. Regular water changes are important to keep nitrates and nitrite levels down in an…

How to increase oxygen in fish tank?

Aeration of water in the aquarium Oxygen is a necessary element in your aquarium. Fish need it to breathe, plants need it at night, and bacteria use it to break down waste. In general, everything that dies or decomposes in fish tank needs and depletes oxygen. Here I'm going to teach you some ways to…

How to get rid of algae in fish tank?

Algae appear in almost every aquarium, in greater or lesser intensity. These primitive plants spoil the appearance of the tank. Algae grow on glass, plants, roots and stones. Although there are more than 130000 known types of algae, only a small number of them are likely to show up in your aquarium. There are several…

How much does a fish tank cost?

Aquariums are becoming more and more popular. Some people think that a small tank is inexpensive and therefore very easy to maintain. Of course, it is worth starting your aquarium adventure with a smaller tank. However, it must be remembered that the costs of a small tank vary depending on the materials we use. When…

How many fish in 10 gallon tank?

One of the most difficult thing when you planning your first fish tank can be choosing the right fish.It's not just important what kind of fish you want to keep in your fish tank, but also how many you want to keep. How many fish can fit in a 10 gallon tank? Here are some…

Does an aquarium require a lot of maintenance?

When it comes to maintaining your aquarium, you'll need to perform some basic daily and weekly tasks to keep your aquarium clean and healthy for your fish. One of the most important parts of setting up a new fish tank is ensuring it cycles properly. You can add your new fish to your aquarium when…

What is fishkeeping?

Fishkeeping is the practice of maintaining and caring for fish in a controlled environment, such as an aquarium or pond.

It involves creating and sustaining a balanced ecosystem that caters to the specific needs of different fish species.

This hobby is not just about keeping fish alive but ensuring their well-being, which includes monitoring water quality, feeding, and maintaining the correct habitat conditions.

Fishkeeping is as much a science as it is an art. Scientifically, it requires an understanding of biology, chemistry, and physics to create a stable environment.

Fishkeeping allows enthusiasts to design aesthetically pleasing underwater landscapes, often referred to as aquascaping.

While some engage in fishkeeping for decorative purposes or as a leisure activity, others pursue it for breeding rare species, educational purposes, or even therapeutic benefits.

Fishkeeping also plays a role in conservation efforts, particularly for species that are endangered in the wild.

History of fishkeeping

The history of fishkeeping traces back to ancient civilizations, where early forms of the hobby were seen in various cultures around the world.

Fishkeeping dates back to ancient times but initially served as a food source.
The appearance of the fish intrigued the Chinese, which led to the breeding of goldfish 1,500 years ago.

Modern fishkeeping began in China around 600 years ago.Interest in aquariums spread around the world with the first aquarium shop in the 1500s.

In the following years, paradise fish began to be imported to the market, which led to the establishment of more aquarium shops.

Today, fishkeeping is more than just a hobby. It’s a window into a world vastly different from our own.

It offers a peaceful retreat from the hustle and bustle of daily life and provides an opportunity to learn about and appreciate the incredible diversity of fish life.

Types of Fishkeeping

  • Freshwater Fishkeeping: This is the most common form, involving species that live in rivers, lakes, and streams. Freshwater aquariums are popular due to their relative ease of setup and maintenance.
  • Saltwater Fishkeeping: Also known as marine fishkeeping, this type involves species from oceans and seas. It requires a more complex setup, replicating the saline environment of the sea.

Aquarium Setup and Maintenance

Maintaining an aquarium is a continuous learning experience.

It requires patience, care, and a willingness to understand the complex interplay of the living organisms within it.

A well-maintained aquarium is not only a beautiful addition to any space but also a thriving ecosystem that reflects the dedication and knowledge of the fishkeeper.

Setting Up the Aquarium

  • Choosing the Right Aquarium: The first step in setting up an aquarium is selecting the right size and type. This choice depends on the space available, the type of fish being kept, and the keeper’s experience level. Factors like glass thickness, shape, and style play a crucial role.
  • Essential Equipment: Key items include filtration systems, lighting, heaters, and thermometers. Each component has a specific role, from maintaining water quality to providing the right temperature and lighting conditions for the fish and plant life.

Creating a Balance in Fish Tank

  • Cycling the Aquarium: Before introducing fish, it’s essential to establish a biological balance. This process, known as cycling, involves cultivating beneficial bacteria to break down toxins.
  • Water Quality Management: Regular testing of water parameters like pH, ammonia, nitrite, and nitrate levels is crucial. Maintaining the right water quality is vital for the health of the fish.

Routine Maintenance

  • Regular Cleaning: Algae control and substrate cleaning are part of routine maintenance. Tools like algae scrapers, siphons, and vacuum cleaner are commonly used.
  • Water Changes: Periodic water changes are necessary to remove waste products and replenish essential minerals. Typically, a portion of the tank water is replaced with fresh, treated water regularly.

Feeding and Care

  • Nutrition: Understanding the dietary needs of different fish species is important. A balanced diet includes a variety of foods, such as flakes, pellets, frozen, and live food.
  • Observation: Regular observation helps in the early detection of potential problems, such as disease or stress in fish.

Advanced Considerations

  • Aquascaping: This is the art of arranging aquatic plants, rocks, and substrates in aesthetically pleasing ways. It enhances the natural beauty of the aquarium and provides a healthy environment for the fish.
  • Technology Integration: Modern aquariums often incorporate advanced technology like automated feeders, LED lighting systems, and digital monitoring of water parameters.

Fish Health and Welfare

Maintaining the health and welfare of fish is a multifaceted responsibility that requires careful attention, knowledge, and compassion.

If all the previous points are correctly implemented, you do not have to worry about the condition of your fish.

Understanding Fish Health

  • Basics of Fish Health: Fish health is a crucial aspect of fishkeeping, encompassing physical well-being, behavior, and environmental conditions. Recognizing signs of good health in fish, such as active swimming, healthy appetite, and vibrant colors, is as important as identifying symptoms of distress or illness.
  • Common Signs of Illness: Indicators of health issues in fish include loss of appetite, lethargy, abnormal swimming patterns, discoloration, and visible wounds or growths. Early detection of these signs is key to effective treatment.

Preventing and Treating Diseases

  • Preventive Measures: Prevention is always better than cure in fishkeeping. Regular maintenance of water quality, proper feeding, and avoiding overcrowding can significantly reduce the risk of diseases.
  • Disease Treatment: Treatment varies depending on the disease. It can range from adjusting water conditions and quarantining affected fish to administering medications. Knowledge of common fish diseases and their treatments is essential for every fishkeeper.

Nutritional Needs of Fish

  • Feeding Practices: Providing a balanced diet appropriate for the specific species is fundamental. This includes understanding the dietary preferences (herbivore, omnivore, carnivore) and feeding habits (top, middle, or bottom feeders) of the fish.
  • Variety and Moderation in Diet: A varied diet ensures a range of nutrients. Overfeeding is a common mistake that can lead to poor water quality and health issues; thus, moderation is key.

Ethical Considerations

  • Responsible Fishkeeping: Ethical fishkeeping involves providing an environment that meets the physical and psychological needs of fish. This includes adequate space, proper social interactions for schooling species, and environments that mimic their natural habitat as closely as possible.
  • Sustainability and Conservation: Choosing fish species that are sustainably sourced and not endangered is an important aspect of responsible fishkeeping. Awareness of the origins of the fish and support for conservation efforts are part of ethical fishkeeping practices.

Ensuring a Stress-free Environment

  • Importance of a Stress-free Habitat: Stress in fish can lead to a weakened immune system and increased susceptibility to diseases. Creating a stable and stress-free environment involves maintaining consistent water parameters, providing hiding spaces, and ensuring a peaceful community in the aquarium.

Fishkeeping – Frequently Asked Questions

Are aquariums ethical for fish?

I think so, as long as aquariums meet certain ethical standards. I mean, for example, the appropriate size of the tank or appropriately selected species.

Your job is to make a good home for the fish and fix anything that might make them unhappy. If you think about these things, your fish will be happy.

I think there are scarier things in nature than walls, like predators that fish need to defend against.

I think most people who have fish tanks understand what it takes to care for fish and what conditions they need. If you’re new to it, the first thing you should do is learn about it.

Are fish difficult to keep?

Taking care of them isn’t hard if you make sure to meet the fish’s needs well.

On this site you will find all the information that will help you learn how to care for your fish tank.

There are some species of fish that may be more difficult to keep, but with the right knowledge it won’t be that difficult at all

Overall, taking care of freshwater fish needs attention and regular care.

Are fish tanks relaxing?

Absolutely! Aquariums are really relaxing. They help you feel less anxious and stressed.

For many people, watching fish relieves stress and provides a mesmerizing experience.

Experts have also discovered that watching fish in an aquarium can help lower blood pressure.

So, having an aquarium isn’t just a hobby, it’s like having a special tool to help you feel better mentally and physically.

Are pet fish bored?

The fish may show signs of boredom or simply stress.

If your fish keeps swimming up and down the tank, it might mean it’s bored or stressed. It’s like when a tiger paces in captivity—it shows they need more stimulation.

Of course, you won’t have fun with your fish, but if you provide the right environment and the right tank mates in the aquarium, the fish won’t be bored.

So, if you understand what fish need and how they act, you shouldn’t see them showing these worrying signs.

Are pet fish intelligent?

You might not realize it, but the fish you keep in your aquarium can be smarter than you think.

They can have abilities comparable to, or even better than, many other animals.

Fish possess a significant level of intelligence that might challenge your common perception of their cognitive abilities.

Can I put normal salt in my fish tank?

If you have freshwater fish, don’t put table salt in their tank.

Usually, it’s not necessary, but sometimes salt is used to treat certain parasites.

However, you need to be careful and know what you’re doing if you use it.

And for saltwater tanks, table salt isn’t good because seawater already has important minerals like calcium and magnesium.

Can I save a dying fish?

It all depends on what you mean by dying fish. If your fish gets sick and dies, it’s hard to make it better.

But if you see signs of sickness, you can do stuff to help.  First, check the water quality using a testing kit. It’s important to keep the water clean.

Maintaining optimal water conditions is essential for keeping fish alive and healthy.

Can a fish feel love?

It’s hard to say if freshwater fish feel love like humans do, but we can see some signs of close relationships and social bonds in their actions.

Certain fish, like cichlids, which mate for life, show behaviors that suggest they form strong connections with each other.

Scientists like Pete Hurd have noticed that these fish take care of their mates and offspring with a level of dedication that implies a deep connection.

They protect and nurture them for a long time, sometimes even more than what dogs do with their puppies.

Can a fish hear you?

Yes, fish can hear you when you talk, but they’re not great at hearing sounds from above the water.

The sounds we make above water aren’t strong enough to go through the surface very well, so fish might not hear our normal talking very clearly.

Even if you shout, fish might hear you a bit, but if you’re just talking normally from a distance, like on a boat, it probably won’t bother them much.

Basically, fish aren’t as affected by human voices as some people might think.

Can fish be a pet?

Sure, fish can make great pets. People sometimes call them “petfish.” But owning a pet fish means committing to taking care of them for a long time because they can live for several years.

It’s important to regularly clean their tank to keep them healthy. If you can’t care for them properly, you need to find someone else who can or consider other options.

Being a responsible pet owner means making sure your fish are well taken care of.

Can fish be friends with humans?

Yes, fish can become friends with people, like the story of scuba diver Hiroyuki Arakawa and his fish friend Yoriko.

They’ve been friends for more than 30 years, showing that fish can recognize and enjoy being around humans.

This special friendship suggests that fish can act like they’re friends with people in certain situations, showing they can recognize and feel comfortable with individual humans.

You can also have this happen with the fish you keep in your aquarium. Some types really like being around people. You might even become close with your fish.

Can fish breath with lungs?

Most fish don’t use lungs to breathe. They use gills, which take in oxygen from water and release carbon dioxide.

Fish draw water in through their mouths, and it passes over their gills for this process.

Some fish, like lungfish, have developed lungs and can breathe air when there’s not enough oxygen in the water.

But for most fish, gills are their main way of breathing.

Can fish cry?

Fish don’t cry like humans because they can’t produce tears. It would be a bit strange in an aquatic environment.

Also, their brains are different from mammals’, so they don’t feel emotions the same way.

This means the idea of fish crying, both physically and emotionally, isn’t the same as it is for humans and other mammals.

Can fish dream?

Scientists are still trying to figure out if fish can dream. They’ve noticed that fish sleep in a way that’s similar to how humans have REM sleep, which is when we often dream.

This doesn’t mean fish definitely dream like humans, but it hints that they might experience something similar during sleep.

This similarity in sleep patterns could have started more than 450 million years ago, before fish and humans became very different through evolution.

Can fish feel anxiety?

Fish can feel stressed and anxious, kind of like how humans do. Things like a dirty tank, too many fish in one place, or mean tank mates can make them stressed out.

They show signs like changes in behavior or appearance, just like humans do when they’re stressed.

So, it’s important to take good care of fish and give them a nice home to keep them healthy and happy.

Can fish feel sadness?

Certainly, scientists confirm that fish are capable of feeling and possess a certain level of intelligence.

They can experience a state similar to depression. Of course, it is challenging to equate this sadness to human sadness due to differences in brain structures that process emotions.

However, changes in behavior and physical health that can indicate a feeling of sadness or anxiety are observed in captive fish, such as decreased activity or a lack of interest in eating.

These symptoms are often interpreted as signs of a depression-like condition. Therefore, it is essential to provide your fish with the right environment to maintain their health.

Can fish feel you talking?

As I wrote earlier, the degree to which large fish hear sounds above the water is significantly limited.

Of course, sounds such as conversation are audible to them, but the sounds generated above the water often lack the strength to penetrate the surface tension of the water significantly.

As a result, ordinary conversation is usually inaudible to fish. So, you don’t have to worry about whether your conversation might scare the fish away or affect their behavior.

Can fish have PTSD?

Fish, like mice and other animals, can feel stressed and scared, kind of like how humans with PTSD feel.

Scientists have noticed that chemicals in the brains of fish in dangerous situations are similar to those in rodents with PTSD.

Even though fish think and feel differently from mammals, they can still get scared, feel pain, and learn from good and bad experiences.

They can remember these experiences and react to them, whether they’re in a lab or in the wild.

But their experience might not be exactly the same as human PTSD.

Can fish recognize us?

New studies show that fish are smarter than we thought. They can tell each other apart and even recognize human faces.

This ability to recognize individuals is based on their unique facial features. We used to think only smart animals could do this, but fish can too.

For example, cleaner fish can even see themselves in a mirror and understand it’s their reflection, just like humans.

This means fish have better memory and understanding than we gave them credit for.

Can fish respond to their name?

As you read earlier, fish hear sounds that come from above the water surface.

While they certainly respond to sounds, their reaction to their name is probably the result of associating the sound with positive experiences, such as feeding or social interaction. Fish do not understand their name as a personal identifier.

Fish often swim up when their owner says something; however, this behavior is not related to the name.

Dr. Baker says fish can hear underwater. So, even though fish don’t understand names like people do, they can connect sounds to things happening around them.

Can fish survive without a bubbler?

Fish can live without a bubbler, but they do need constant oxygen, which often comes from moving water. A bubbler helps move air at the water’s surface in the tank.

However, the most crucial part of an aquarium is the filter, which can also help stir the water.

Deciding to use a bubbler depends on the type of fish, tank size, water temperature, and the current oxygen level in the water.

Can fish survive without a heater?

Fish can survive without a heater, depending on their species’ preferred water temperature. If we can keep the water at the right temperature naturally, it’s ideal.

Some fish can survive for a short time in temperatures that aren’t ideal, but being in those conditions for too long isn’t good for them.

However, tropical fish need a heater. It’s important because cold water slows metabolism, while too much heat can cause overheating.

Keeping the water temperature right is vital for fish health.

Can fish see us?

Fish can see and understand what’s outside their tank with their limited eyesight.

They can hear better than humans and recognize the person who feeds them, like how dogs or cats recognize their owners.

This helps them interact with the outside world, including noticing and reacting to people near their tank.

Can guppies survive in tap water?

Guppies can survive in tap water. They need their water treated to get rid of harmful chlorine or fluorine, which can hurt their gills.

They like water that’s a bit harder or slightly salty. But the most important thing for them to live happily is having a tank that’s cycled properly, so they have a stable and healthy home.

Can guppies survive without pump?

I’ve already answered this before. For guppies, it’s straightforward: if we keep the water moving, we don’t need an air pump.

Guppies can do fine without one, especially in a well-kept tank with natural conditions where water movement provides enough oxygen.

But the tank’s size and the number of fish are important factors to consider if you’re thinking about using an air pump.

Can pet fish get lonely?

Just like people, pet fish can feel lonely when alone. It’s best to keep them with other fish to keep them company.

Studies of fish in tanks reveal they interact with each other, and solitary fish might show signs of feeling down and being less active, showing how important socializing is for their happiness.

Can you bond with fish?

Certain types of fish can form bonds with their owners, with bonding levels differing between species.

For example, Oscars are more likely to bond if they receive good care.

The strength of this emotional connection relies on both the species of the fish and the environment created by the owner, showing the possibility of meaningful relationships between fish and humans.

Did fish sleep or not?

Fish do rest, but they don’t sleep like animals on land.

They become less active and slow down their metabolism but stay ready for any threats.

Depending on the type, fish may rest by staying still in the water, tucking themselves into a safe spot, or settling in a nest.

This resting is important for their health.

Do fish enjoy aquariums?

Fish can be happy in aquariums if they have what they need.

Even though aquariums are smaller and less diverse than their natural habitats, they provide safety from predators, which can help fish live longer.

Instead of happiness, we might think of fish in aquariums as feeling content.

How they feel mostly depends on how well they’re taken care of and their environment’s quality.

I believe that when the aquarium is well taken care of, the fish are happy.

To support this, I can mention that my cardinal tetra, which typically live for 5 years, have been thriving in my aquarium for 8 years.

Do fish enjoy playing?

Fish display play-like behaviors, such as interacting with objects, which are not random but rooted in their evolutionary history.

These actions reveal aspects of their psychology, including emotions, motivations, and intellect, indicating that fish are capable of complex behaviors like play.

You might not be able to play with your fish, but any form of interaction can still be enjoyable.

Do fish feel pain when hooked?

Fish can feel pain because they have special sensors called nociceptors that react to things like sharp hooks.

This shows they can feel something like pain, helping them avoid danger.

Do fish feel stress in tanks?

Fish kept in aquariums can get stressed, which can harm their health and looks.

Stress weakens their immune system, making them more likely to get sick and even die.

Although stress is normal for fish in the wild, it’s a big problem for aquarium fish and requires careful attention to keep them healthy.