Colombian shark catfish

The Colombian shark catfish, also known as Ariopsis seemanni, is a species of catfish native to the freshwater and brackish environments of Central and South America, particularly from Colombia. This fish showcases a silver-grey body with a sleek, shark-like appearance, featuring a forked tail and prominent barbels near its mouth. Despite its name and appearance, it is relatively peaceful and can grow to a sizable length in captivity. In the aquarium hobby, it is moderately well-known and kept by enthusiasts who appreciate its striking appearance and unique behavior, although its requirement for progressively brackier water as it matures can pose a challenge to maintain.