About Oxyzygonectes dovii (Günther, 1866)
The white-eye, Oxyzygonectes dovii, is a species of killifish belonging to the family Anablepidae. This species is the only member both of its genus Oxyzygonectes and of the subfamily Oxyzygonectinae. It is found in Pacific drainages across Nicaragua, Costa Rica, and Panama. Unlike other members of the Anablepidae family, O. dovii does not have a gonopodium. Its dorsal and anal fins are positioned toward the rear of the body, located just before the caudal peduncle and well behind the midpoint of the body. This species reaches a maximum total length of about 15 centimetres, or 6 inches. A large number of individuals inhabit brackish waters. They occupy low-elevation rivers located up to 15 metres (50 feet) above sea level. Their diet consists of detritus, algae, and occasionally terrestrial insects. While this species occurs in estuaries, it breeds in freshwater. It is not a seasonal killifish, and O. dovii has been successfully bred in captivity.