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Catfish (or catfishes; order Siluriformes / s ɪ ˈ lj ʊər ɪ f ɔːr m iː z / or Nematognathi) are a diverse group of ray-finned fish.Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to ...
Pterygoplichthys disjunctivus, [1] commonly known as the vermiculated sailfin catfish, [2] is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Madeira River basin in Bolivia and Brazil, although it has subsequently been introduced to various countries.
The maximum length is 160 cm (5.2 ft) in the blue catfish and the flathead catfish. [5] The bullheads, though, are small catfish which at maturity often weigh less than 0.5 kg (1 lb), while the madtoms (genus Noturus ) are in general much smaller.
Callichthyids are fairly small catfish, and range in size from some tiny Corydoras species that do not exceed 2 cm (0.79 in) to Hoplosternum littorale, which some sources list as growing to a length of up to 24 cm (9.4 in) TL. [3] [14] The mouth is small and ventral with one or two pairs of well-developed barbels. [4]
Wallago attu, the boal or helicopter catfish is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. W. attu is found in large rivers and lakes in two geographically disconnected regions (disjunct distribution), with one population living over much of the Indian Subcontinent and the other in parts of Southeast Asia.
Clarias catfish and primarily Clarias batrachus (walking catfish) have been introduced to many different areas of the world, causing problems for native wildlife. The effect of the introduction of these fish varies from area to area, but as they are predatory, they often affect the local wildlife by eating other fish, birds, and amphibians.
One well-known ariid catfish is the hardhead catfish, Ariopsis felis, abundant along the Western Atlantic coast from Massachusetts to Mexico. Although hardhead catfish reach a weight of about 5.5 kg (12 lb) and are edible, they have a mixed reputation as game fish and are often considered nuisance bait stealers.
In Africa, this catfish has been reported as being second in size only to the vundu of the Zambesian waters, [4] although FishBase suggests the African sharptooth catfish surpasses that species in both maximum length and weight. [5] [6] C. gariepinus has an average adult length of 1–1.5 m (3 ft 3 in – 4 ft 11 in).