The water temperature during
crowding was 20.6"0.68C, the pH was 7.2"0.2 and the dissolved oxygen was
7.1"0.1 mgrl. After 4 h, the fish were returned to the original tanks and rearing
density but the tanks contained water at 0, 5 and 20 ppt NaCl. Fish in these tanks were
maintained as for fish recovering after transport