Some of the embryonic development stages and growth of the frys of brown trout (Salmo trutta macrostigma) and Black Sea trout (Salmo trutta labrax) were examined. The first eye pigmentation in the brown trout eggs were realised on the 35 days (244 day-degree) at 7.23°C and 31 days (260 day-degree) at 8.21°C post fertilisation. First eye pigmentation of the Black Sea trout eggs were seen on day 25 (215 day-degree) at 8.21°C. Brown trout larvae were hatched on day 56 (387 day-degree) at 7.23°C and on day 50 (413 day-degree) at 8.21°C post fertilisation. Black Sea trout larvae were hatched on day 53 (440 day-degree). Survival rates in the eyed stages were 84.50% (7.23°C) and 86.65% (8.21°C) and 81.59%. Survival rates in the hatching were 82.27% (7.23°C) and 80.96% (8.21°C) in brown trout and 78.30% in Black Sea trout. Alevins were initially fed with only Artemia naupliii and then were acclimated to the commercially dry feed. The brown trout frys reached from 76.8±6.1 mg to 3527.4±250.3 mg in the period of 111 days. Growth in the frys was the best described using an exponential model and it was W(t)=18 .741 x 388A. Alp et al. / Turk.