Our Spectacular Planet

The whale shark, Rhincodon typus, is a slow moving filter feeding shark that is the largest living fish species. It can grow up to 12.2 m (40 ft) in length and can weigh up to 13.6 tonnes (15 short tons). This distinctively-marked shark is the only member of its genus Rhincodon and its family, Rhincodontidae (called Rhinodontes before 1984), which is grouped into the subclass Elasmobranchii in the class Chondrichthyes. ...

The ocean sunfish, Mola mola, or common mola is the heaviest bony fish in the world, with an average weight of 1,000 kilograms or about 2,200 pounds. The species is native to tropical and temperate waters around the globe. It resembles a fish head without a tail, and its main body is flattened laterally. Sunfish can be as tall as they are long, when their dorsal and anal fins are ...

    A newly discovered genus of fish that includes one of the world's smallest known fish and smallest known vertebrates, Paedocypris progenetica. Two species of Paedocypris were found living in highly acidic peat wetlands on the Indonesian island of Sumatra and in the Malaysian part of Borneo. Paedocypris progenetica, a distant cousin of the carp, is thin, transparent, and the size of a large mosquito when fully grown. A mature female specimen ...