The aim ol this study was to determine isolation, identification and phenotypic characterization of Lactococcus garvieae which is cause of Streptococcosis in rainbow trout fisheries in Konya region. Between june 2002 and August 2004, 180 ill fish were obtained from 6 rainbow trout fisheries where the disease was observed. Out of the fish samples. 30 L garvieae isolates were isolated. API 20 Strep, polymerase chain reaction (PCR) and classical bacteriological techniques were used the identification of agents. In conclusion, it has been determinated that the local L. garvieae strains were homogen and have capsule formations regard phenotypic characterizations.