Catfish | Siluriformes | Catfish facts and how to take care of them
Catfish belong to the bony fish order Siluriformes. The name catfish refers to the long barbels - which is a fleshy filament growing from the mouth or snout of a fish - these are present about the mouth of the catfish and resembles cat whiskers. Most species of catfish do not have scales like the typical fish, albeit some species are covered with heavy plates of hard, armored skin. Catfish tend to be strong and a few of the species survive for some time when they are out of the water, this is because their skin is kept moist by an outer layer of mucus. All catfishes have at least one pair of barbels, mainly on their upper jaw; they may also have a pair on the snout and additional pairs on the chin. Today catfishes constitute 35 families spread out about nearly 2,900 species. The majority of species populate in freshwater, but a scarce number of them, belonging to the Ariidae and Plotosidae families, are marine. Catfishes are generally bottom dwellers, that is they live and feed on the