Abstract
This study aimed to investigate the optimal water temperature (low temperature; LT: 5, 8, 11 and 14℃, high temperature; HT: 17, 20, 23, 26 and 29℃) on growth of juvenile starry flounder. In the LT experiment, we used juvenile starry flounder averaging 19.3±0.1 g/fish (Mean ± SD) of body weight, in the HT experiment, the experimental fish averaging 15.8±2.7 g/fish (Mean ± SD) of body weight, and we reared the fish for 80 days. Survival of fish of LT group was >96.3%, and HT groups was >90.0% except for 29℃ (48.0%). Feed consumption, feed efficiency, weight gain and specific growth rate (SGR) in 5℃ was significantly lower than of fish reared at other temperature, and significantly higher weight gain was observed in 11 and 14℃ than other temperature of LT group. Highest weight gain and SGR was observed in 17℃ in HT group, and 29℃ was significantly lower than of fish reared at other temperature. Visceral somatic index and hepatosomatic index were not significantly difference among the temperature. Considering these results, the optimal rearing temperature range for normal growth and feed efficiency of juvenile starry flounder is 11-20℃.
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