How Many Cory Catfish Should Be Kept Together?

Cory catfish are social creatures that should be kept in groups of at least 6, but preferably more. This is because they are schooling fish that like to interact with each other. Keeping them in a group also helps to reduce stress and aggression. The ideal number of cory catfish to keep together depends on the size of the tank and the species of cory catfish.

Tank Size

The size of the tank is the most important factor to consider when determining how many cory catfish to keep together. A general rule of thumb is to have at least 1 cory catfish for every 10 gallons of water. So, for a 20-gallon tank, you could keep 2-3 cory catfish. For a 55-gallon tank, you could keep 5-6 cory catfish. And so on.

Species of Cory Catfish

There are over 150 species of cory catfish, and they vary in size from 1-3 inches. The smaller species, such as the pygmy cory catfish, can be kept in groups of 6-8 in a 10-gallon tank. The larger species, such as the bronze cory catfish, need more space and should be kept in groups of 4-6 in a 20-gallon tank.

Other Factors to Consider

In addition to tank size and species, there are a few other factors to consider when determining how many cory catfish to keep together.

The temperament of the fish: Some cory catfish species are more aggressive than others. If you are keeping a group of cory catfish that are known to be aggressive, you may need to keep them in a larger tank or in smaller groups.
The age of the fish: Younger cory catfish are more likely to be playful and active, while older cory catfish are more likely to be sedentary. If you are keeping a group of cory catfish of different ages, you may need to adjust the size of the tank or the number of fish in the group.
The type of filtration: The type of filtration in the tank can also affect how many cory catfish you can keep together. A tank with a good filtration system can support more fish than a tank with a poor filtration system.

Conclusion

The ideal number of cory catfish to keep together depends on a variety of factors, including tank size, species of cory catfish, and other factors. By following the guidelines in this article, you can ensure that your cory catfish have a happy and healthy life.

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