Catfish

A catfish is any fish of the order Siluriformes. The name comes from the fact that many kinds of catfish have barbels resembling a cat's whiskers.

## Economic importance[edit]

Some of the larger kinds of catfish are raised as food, while some of the smaller kinds are kept in aquariums as bottom feeders and algae eaters.

## See also[edit]

* Aquaponics
* Nitrogen cycle
* Nitrification bacteria convert Ammonia into Nitrates
* Permaculture Gardening
* Aquaculture
* Hydroponics

## External links[edit]

* Backyard Aquaponics