Phractocephalus
The redtail catfish, Phractocephalus hemioliopterus, is a pimelodid (long-whiskered) catfish named for its red or orange caudal fin. In Venezuela it is known as cajaro and in Brazil and even in a few parts of Bay of Bengal it is known as pirarara.It is the only extant species of the genus Phractocephalus. This fish originates from South America. Despite reaching a large size (up to 134 centimetres (53 in) TL), this fish is a common aquarium fish.It is said that the natives do not eat the meat of the Redtail catfish because it is black in coloration. However, the redtail catfish has been hybridized with other fish such as the Tiger Shovelnose Pseudoplatystoma sp. through the use of hormones in attempts to create a viable food fish; these hybrid fish sometimes make it into the aquarium hobby under a variety of common names.
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