A report on fin anomaly in thinlip mullet fish. Liza ramada was firstly described in one specimen caught from Homa Lagoon, Aegean Sea. The anomalous specimen showed the initial six rays of upper and lower lobes in the caudal fin and all the pelvic fin rays to have lengthened. Fin rays did not significantly vary in number, while considerable variations were established among some morphometric values comparing the meristic aspects of normal with those of abnormal specimens. Finally, we conclude that the anomaly may have resulted from domestic and industrial chemicals discharged into the area.