What Are Corydoras Good for?

As a small bottom feeder, the cory catfish is an extremely efficient cleaner. It will scavenge the leftovers that have sunk to the bottom, cleaning up after messier fish that feed at the surface and midlevel of the tank.

Do cory catfish clean the tank?

As a small bottom feeder, the cory catfish is an extremely efficient cleaner. It will scavenge the leftovers that have sunk to the bottom, cleaning up after messier fish that feed at the surface and midlevel of the tank. ... This makes it easier for the catfish to dig for stray bits of food at the bottom.

What do cory catfish do?

Corys, like all catfish, are bottom feeders and scavengers (though they also appreciate a meal of brine shrimp). ... On the one hand, that means they can help to keep your tank clean by finding and eating bits of uneaten food and other debris.