How Many Pygmy Corys in a 20 Gallon – The Best Guide

A 20-gallon aquarium is a great size for pygmy Corydoras, as it provides enough space for a small group of these peaceful bottom-dwellers. So, how many pygmy Corys in a 20 gallon tank? The answer depends on a few factors, but generally, 5-10 pygmy Corys would be comfortable in a 20-gallon aquarium.

Pygmy Corys, also known as Pygmy Corydoras Catfish, is a popular freshwater aquarium fish. They are small and peaceful, making them an ideal addition to many tanks. But how many Pygmy Corys can you keep in a 20 gallon tank? This article will explain the factors to consider when determining how many Pygmy Corys can be housed in a 20 gallon tank.

How Many Pygmy Corys in a 20 Gallon

If you are looking to keep a school of Pygmy Corys in your 20-gallon tank, then read on! Pygmy Corys (Corydoras pygmaeus) are small, peaceful catfish that can provide lots of activity and fun for any aquarium. These little fish require special attention when it comes to stocking levels and appropriate tank mates, however. A school of Pygmy Corys is typically made up of six or more individuals; the exact number depends on the size and shape of the tank.

So how many Pygmy Corys should you get if you have a 20 gallon aquarium? The generally accepted rule is one inch per two gallons — meaning 10 inches total fish length for a 20-gallon aquarium.

Just be sure to provide them with plenty of hiding places and a soft, sandy bottom to root around in.

How Many Pygmy Corys in a 20 Gallon


How Many Pygmy Corys Should Be Kept Together?

Corydoras are a peaceful, social species of fish that does well in groups. For pygmy corys, a good rule of thumb is to keep at least 6 together. This allows them to form bonds with each other and provides plenty of space for them to swim around and explore their tank.

Pygmy corys are also very active fish, so a larger group will provide even more entertainment!

Can I Keep 3 Pygmy Corydoras?

There is no definitive answer to this question as it depends on a number of factors, including the size of your aquarium, the other fish you have in your aquarium, and the specific species of pygmy corydoras. In general, however, it is generally safe to keep three pygmy corydoras together in an aquarium.

How Many Gallons Does Pygmy Corys Need?

Pygmy Corys are a species of freshwater fish that originates from South America. These bottom-dwelling fish are often found in slow-moving rivers and streams with plenty of hiding places among rocks and roots. In the wild, these fish typically grow to be around 2 inches long, but they can reach up to 3 inches long in captivity.

As far as care goes, Pygmy Corys are relatively easy to keep and make great additions to any community tank! They are peaceful by nature and do well when kept with other small, peaceful fish. When it comes to housing Pygmy Corys, a general rule of thumb is 1 gallon of water per 1 inch of fish (so for every 2 inch Pygmy Cory, you would need 2 gallons of water).

It’s important to have a good filtration system in place when keeping any type of freshwater fish, but especially so when keeping bottom-dwellers like Corydoras since they tend to produce more waste than other types of fish. All in all, if you’re looking for a hardy and low-maintenance addition to your aquarium, consider getting yourself some Pygmy Corys!

Can I Keep 2 Cory Catfish?

Yes, you can keep two Cory Catfish together. They are a peaceful species and get along well with others of their kind. In the wild, they live in groups so keeping them in pairs is ideal.

They will often school together and help keep each other company.

20 gallon long tank update with pygmy corys!

How Many Pygmy Corys in a 30 Gallon

Assuming you are talking about the fish species Pygmy Corydoras, also known as Dwarf Corydoras, the recommended stocking density is 1-2 fish per gallon. This means that a 30 gallon aquarium could comfortably house 30-60 Pygmy Corys.

How Many Pygmy Corys in a 10 Gallon

Assuming you are talking about the dwarf corydoras, also known as pygmy corys, the general rule of thumb is 5-10 gallons per fish. So, for a 10 gallon tank, you could have 2-5 dwarf corys. These little guys are super active and love to school together, so the more the merrier!

Just be sure to do your research before adding any new fish to your tank so that you can provide them with the best possible environment.

How Many Albino Cory Catfish in a 20 Gallon

If you’re looking to add some albino cory catfish to your 20 gallon aquarium, you’ll need to do a bit of research to find out how many fish you can safely keep in your tank. Depending on the size of your fish and the other occupants of your tank, you may be able to keep up to 12 corys in a 20 gallon aquarium. However, it’s always best to err on the side of caution and start with a smaller number of fish until you get a feel for how they interact with each other and their environment.

How Many Corydoras in a 20 Gallon

Corydoras are a freshwater fish that originates from South America. They are a peaceful community fish that does well in groups. Corydoras are bottom-dwellers and do best with plants in their environment.

When kept with other fish, they should be paired with those of similar size. In a 20 gallon tank, you could comfortably keep 5-6 Corydoras. Corydoras prefer to live in temperatures between 72-79 degrees Fahrenheit.

The pH level of the water should be 6.5-7.5 and soft to moderate hardness levels. These fish are very sensitive to changes in their environment, so it is important to maintain stability in the tank parameters. Corydoras are omnivorous and will eat most anything, but prefer a diet high in protein.

A good quality flake food or pellet food will provide them with the nutrients they need.

How Many Cory Catfish in a 15 Gallon Tank

If you’re considering adding some Cory catfish to your 15 gallon tank, you might be wondering how many of these bottom-dwelling fish you can keep. The answer depends on a few factors, including the size and age of your fish and the other occupants of your tank. Generally speaking, you can keep 1-2 Corys per gallon of water.

So, in a 15 gallon tank, you could theoretically keep up to 30 Cory catfish! However, this number is probably too high for most tanks. A more realistic stocking density for Corys would be 1-3 fish per 10 gallons of water.

Of course, the other inhabitants of your tank will also play a role in determining how many Corys you can keep. If you have larger fish or aggressive fish species, you’ll need to adjust your stocking density accordingly. You’ll also need to provide plenty of hiding places and refuges for your Corys, as they are timid little fish that do best in groups.

In conclusion, while there is no definitive answer to the question “How many Cory catfish in a 15 gallon tank?”, 1-3 fish per 10 gallons is a good rule of thumb. Be sure to take into account the other residents of your aquarium when making your decision, and provide plenty of hiding places and refuge for your shy little friends!

How Many Cory Catfish in a 10 Gallon Tank

A 10 gallon tank is a popular size for many fish enthusiasts, and cory catfish are a common choice to add to these tanks. Corys are peaceful bottom-dwellers that help keep the tank clean by scavenging for food. They make an excellent addition to any community tank and can even be kept with small shrimp.

So, how many cory catfish can you safely keep in a 10 gallon tank? The rule of thumb is 2-5 gallons of water per fish. This means that you could theoretically keep up to 20 corys in your 10 gallon tank.

However, this is not recommended as it would quickly lead to overcrowding and poor water quality. A better option would be to stick with 8-10 corys in your 10 gallon tank. This will allow them plenty of room to swim around and stay healthy.

Corys are social creatures and do best when kept in groups. A group of at least 3 should be maintained, but more is always better. In a 10 gallon tank, a group of 6-8 corys would be ideal.

This will give them plenty of space to interact with each other and stay active. It’s also important to note that male and female corys should be kept in equal numbers to avoid aggression from the males during spawning season. Overall, cory catfish are great additions to any freshwater aquarium.

They’re relatively easy to care for and make wonderful community fish.

How Many Cory Catfish in a 5 Gallon Tank

Cory catfish are one of the most popular fish for freshwater aquariums. They are peaceful, bottom-dwelling scavengers that help keep the tank clean. Corys prefer to live in groups, so it’s best to add at least 3-5 fish to your tank.

When keeping Corys in a 5 gallon tank, it’s important to provide plenty of hiding places and a sandy substrate for them to forage. These active little fish will swim throughout all levels of the tank, so be sure to include some plants or decorations for them to explore.

How Many Cory Catfish Should Be Kept Together

Cory catfish are a peaceful, social species that does best in groups. For this reason, it’s generally recommended to keep at least four corys together. That said, there are some things to consider when determining how many corys to keep together.

First, the size of your aquarium will play a role in how many corys you can keep together. Corys grow to be about 2-3 inches in length, so you’ll need an aquarium that can accommodate their adult size. A 20 gallon aquarium is typically the minimum size recommended for keeping four corys together.

Second, you’ll need to consider the other fish in your aquarium. If you’re keeping corys with other fish species, make sure they are all similarly sized and have compatible temperaments. Avoid keeping corys with larger fish that might view them as prey, as well as aggressive fish that could bully or stress them out.

Finally, take into account your own personal preferences. Some people prefer to keep a smaller group of corys while others find that a larger group is more enjoyable to watch. Ultimately, it’s important to choose what feels right for you and your aquarium setup.


A 20 gallon tank is a bit too small for most corydoras species. A single pygmy cory would be lost and lonely in that space, and wouldn’t do well. Even a group of 5 or 6 pygmy corys would have a hard time in a 20 gallon tank – they’d be constantly bumping into each other and stressing each other out.

If you’re set on keeping pygmy corys, we recommend getting at least a 30 gallon tank.


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