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It is the most species-rich genus of catfish in North America, [1] native to the central and eastern United States, and adjacent parts of Canada. [2] Their fin spines contain a mild venom with a sting comparable to that of a honey bee. [1] Nearly half the species of madtom catfishes were described in a single comprehensive revision of the group.
The North American catfish has acquired an association with American Southern folklore which exceeds its place as a mere food fish. The image of cane-pole fishing for catfish at a proverbial lazy stream has become a stand-by of southern Americana. In some areas, the bullhead is seen as a desirable quarry, for its fighting qualities exceed its size.
The Chiapas catfish (Lacantunia enigmatica) is an unusual species of catfish (order Siluriformes) from the Usumacinta River basin in the Mexican state of Chiapas and in Guatemala. [1] It was scientifically described in 2005 and placed in its own family Lacantuniidae .
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The flathead catfish grows to a length of 155 cm (61 in) [8] and may weigh up to 55.79 kg (123.0 lb), [9] making it the second-largest North American catfish (after the blue catfish, Ictalurus furcatus). [9] More commonly, adult length is about 15–45 inches (38–114 cm). [6] Its maximum recorded lifespan is 28 years. [10]
The Neotropical family Callichthyidae is found in most South American river drainages (Paraná-Paraguay, São Francisco, Atlantic Coastal basins in Brazil, Amazon, Orinoco, Maracaibo, Magdalena). Hoplosternum punctatum is the only species in Central America, as it occurs in a few rivers in Panama.
The golden cave catfish lack pigmentation and are up to 16.1 cm (6.3 in) in standard length. [2] They have very small eyes that are covered with skin, and are probably effectively blind. [2] They feed on detritus and invertebrates that fall into the lake in which they live. The population is estimated at 200–400 individuals. [6]
Ancistrus is a genus of nocturnal freshwater fish in the family Loricariidae of order Siluriformes, native to freshwater habitats in South America and Panama.Fish of this genus are common in the aquarium trade where they are known as bushynose or bristlenose catfish.