Why do pet stores keep fish in bare-bottom tanks?

The practice of keeping fish in tanks without substrate has become increasingly popular in the world of fishkeeping. There are a number of reasons why pet stores have started to keep fish in bare-bottom tanks. The first reason is that it is easier to clean a bare-bottom tank. Without substrate, there is less places for waste to build up and fewer places for algae to grow. This means that the water in a bare-bottom tank stays cleaner for longer and the fish are less likely to contract diseases. Another reason why pet stores keep fish in bare-bottom tanks is that it is easier to see the fish. This is especially important for store owners who want to be able to quickly and easily check the health of their fish. In a tank with substrate, it can be difficult to get a good look at the fish and their bodies. By keeping fish in bare-bottom tanks, pet stores can ensure that their fish are healthy and happy.


While there are a number of reasons pet stores might keep fish in bare-bottom tanks, one of the most important is hygiene. Without any substrate for fish to hide in, it’s much easier to keep the tank clean and free of waste. This helps ensure the health of the fish and prevents the spread of disease.

This allows store employees to quickly isolate sick fish and get them the treatment they need. If a fish is listless or not eating, it’s easier to see in a bare-bottom tank. Bare-bottom tanks also make it easier to spot sick fish.

They make it easier to keep the tank clean and the fish healthy. Overall, bare-bottom tanks are a hygienic choice for pet stores.

Ability to catch the fish

While there are a number of different methods that can be used to catch fish, the most common and most effective method is to use a net. One of the most important aspects of keeping fish in a home aquarium is the ability to catch the fish when needed.

The most common type of net is made from nylon, but there are also nets made from other materials, such as mesh. The size of the net is important, as is the type of material. There are a number of different factors to consider when choosing a net for catching fish.

For this reason, it is important to choose a net with a mesh size that is appropriate for the fish that will be caught. The smaller the mesh, the more likely it is that the fish will be able to escape. The mesh size is also an important consideration.

Finally, the shape of the net is also important. The shape of the net will affect the way that the fish is caught, so it is important to choose a net that is the right shape for the fish that will be caught. The most common shape is the round net, but there are also nets that are rectangular or square.


Algae are a type of aquatic plant that can live in both fresh and salt water. Algae are an important part of the aquatic food chain and provide food and shelter for many aquatic animals. They are often found in ponds, lakes, and streams.

Algae can also block the gills of fish, preventing them from breathing. Algae can release toxins into the water that can kill fish. Pet stores often keep fish in bare-bottom tanks because algae can be harmful to fish.

Display tanks

A display tank is a fish tank that is typically found in a pet store. This type of tank also allows for better viewing of the fish. The reason pet stores keep fish in bare-bottom tanks is because it is easier to clean and maintain. These tanks are usually bare-bottom, which means there is no substrate or decorations in the tank.

In addition, bare-bottom tanks can be more difficult to keep stable. These fish may become stressed and stop eating. This can be harmful to fish, especially those that are sensitive to changes in water parameters. Without substrate to help buffer changes in water chemistry, the water in a bare-bottom tank is more likely to fluctuate. Fish that like to dig or burrow may not be happy in a tank without substrate. Bare-bottom tanks are not ideal for all types of fish, however.

If you are considering keeping fish in a bare-bottom tank, do your research to make sure it is a good fit for the type of fish you want to keep.

What I would do if I owned a store

I would also feed the fish a variety of foods, including live and frozen foods. I would also make sure that the water was clean and well-oxygenated. If I owned a store, I would make sure that the fish were kept in tanks with plenty of plants and hiding places.


In addition, it also reduces the risk of infection and disease. This is because it allows for better filtration and easier cleaning. While there are a number of different opinions on the matter, the general consensus is that keeping fish in bare-bottom tanks is the best way to go.

There are a number of different filtration systems that can be used in bare-bottom tanks, but the most popular is the canister filter. This type of filter is able to effectively remove debris and waste from the water, while also providing adequate aeration.

Cleaning a bare-bottom tank is also much easier than cleaning a tank with a gravel substrate. This is because there is no need to vacuum the gravel, and the tank can be simply wiped down with a sponge or cloth.

Overall, keeping fish in a bare-bottom tank is the best option for both the fish and the owner. It is important to remember, however, that bare-bottom tanks do require more maintenance than tanks with a gravel substrate.

Frequently Asked Questions

1.Why do pet stores keep fish in bare-bottom tanks?

Fish tanks without gravel or other substrate can be easier to clean and maintain. This is especially important in pet stores, where tanks must be kept clean to prevent the spread of disease.

2. How often do bare-bottom tanks need to be cleaned?

Bare-bottom tanks should be cleaned on a regular basis, just like any other fish tank. The frequency will depend on the number and type of fish in the tank, as well as the size of the tank.

3. Are there any disadvantages to keeping fish in bare-bottom tanks?

One potential disadvantage is that some fish may not feel as comfortable without a substrate to hide in. This can be less of a problem in larger tanks, where there are more places for fish to hide.

4. What types of fish are best suited for bare-bottom tanks?

Many different types of fish can be kept in bare-bottom tanks, but some may be better suited than others. Some good choices include goldfish, bettas, and danios.

5. Are there any special considerations for setting up a bare-bottom tank?

When setting up a bare-bottom tank, it is important to make sure that all of the equipment is properly installed and that the tank is completely filled with water before adding any fish.

Final thoughts

Pet stores keep fish in bare-bottom tanks because they are easier to clean and maintain. This type of tank is also less likely to harbor harmful bacteria and parasites. Additionally, bare-bottom tanks allow for better filtration and aeration, which is beneficial for the fish.