WAstroblepus is a genus of fish in the family Astroblepidae found in South America and Panama. This genus is the only member of its family. These catfishes are primarily found in torrential streams in the Andean area. Astroblepus pholeter and A. riberae are troglobites adapted to living in subterranean water systems. These species are typically small, less than 10 cm (4 in). The largest species reaches 30 cm (1 ft). These fish have suckermouths like those of loricariids. They have two pairs of barbels, maxillary and nasal. The dorsal fin spine lacks a locking mechanism. These fish also have odontodes, tiny teeth on their skin. All species exhibit a conical, pointy type on their fin rays like that found in other loricarioids; other species also exhibit a blunt type that is only found on their skin.
WAstroblepus chapmani is a species of catfish of the family Astroblepidae. It can be found in the Magdalena River in Colombia.
WEremophilus mutisii is a species of catfish of the family Trichomycteridae, and the only member of its genus. This fish grows to about 30 centimetres (12 in) and originates from the Bogotá River basin, which is a tributary of the Magdalena River. It has probably been introduced to Ubaté, Chiquinquirá, and Tundama valleys, Colombia.
WLeporinus muyscorum is a species of freshwater fish in the genus Leporinus. It is endemic to Colombia, where it occurs in the Magdalena River Basin and Atrato River. The species was first described by Franz Steindachner in 1900.
WOrestias is a genus of pupfish. Older systematics classified them into the own family Orestiidae. They are found in lakes, rivers and springs in the Andean highlands of South America, and several species are considered threatened. They are egg-laying fish that feed on small animals and plant matter. The largest species can reach a total length of 27 cm (10.6 in), but most remain far smaller. Their most characteristic feature is the absence of the ventral fin, although this is shared by a few other pupfish. Despite their moderate to small size, they are important to local fisheries and a few species are farmed.
WSturisoma aureum is a species of armored catfish endemic to Colombia where it is found in the Magdalena, San Jorge and Cesar River basins. This species grows to a length of 20 centimetres (7.9 in) SL. This species can be found in the aquarium trade.
WSturisomatichthys leightoni is a species of armored catfish of the family Loricariidae endemic to Colombia, where it occurs in the upper Magdalena and Cauca River basins. This species grows to a length of 18 centimetres (7.1 in) SL.