Gülah SAÇ
Abstract
Five freshwater fishes, Carassius gibelio (Bloch, 1782), Gobio bulgaricus Drensky, 1926, Leucaspius delineatus (Heckel, 1843) Phoxinus strandjae Drensky, 1926 and Rutilus rutilus (Linnaeus, 1758) were recorded for the first time for Istranca Stream which is emptying to Lake Durusu in ?stanbul. With the result of present study, the number of the fish species living in the basin has increased to 33.