Fish

The iridescent shark or iridescent shark catfish is a species of shark catfish native to the rivers of Southeast Asia. Despite its name, it is not a shark.

The wels catfish, also called sheatfish or just wels, is a large species of catfish native to wide areas of central, southern, and eastern Europe, in the basins of the Baltic, Black and Caspian Seas. It has been introduced to several countries in Western Europe, Mediterranean and Asia as a prized sport fish.

The flathead catfish, also called by several common names including mudcat or shovelhead cat, is a large species of North American freshwater catfish in the family Ictaluridae. It is the only species of the genus Pylodictis.

The blue catfish is a large species of North American catfish, reaching a length of 65 in (170 cm) and a weight of 143 lb (65 kg). The continent’s largest catfish, it can live to 20 years, with a typical fish being between 25–46 in (64–117 cm) and 30–70 lb (14–32 kg).

The channel catfish, known informally as the “channel cat”, is a species of catfish native to North America. They are North America’s most abundant catfish species, and the official state fish of Kansas, Missouri, Nebraska and Tennessee.