The Redtail catfish

The redtail catfish, Phractocephalus hemioliopterus, is a pimelodid catfish. In Venezuela, it is known as cajaro, and in Brazil, it is known as pirarara, stemming from the Tupi language words pir and arara. It is the only extant species of the genus Phractocephalus.Theredtail catfish, Phractocephalus hemioliopterus, is a pimelodid (long-whiskered) catfish. In Venezuela, it is known as cajaro, and in Brazil,