Redtail barbThe redtail barb is a species of cyprinid fish endemic to KwaZulu Natal in South Africa. It is found at altitudes of, particularly in clear streams over sandstones.SizeThis species reaches a length of.EtymologyThe fish is named in honor of John Henry Gurney, an English banker and amateur ornithologist, through whose help Günther received numerous specimens from Port Natal Durban, South Africa.