Abstract
Objectives of the experiment were (1) to estimate the temperature tolerance and preference of channel catfish acclimated at six different temperatures and (2) to investigate relationships among temperature tolerance, temperature preference and acclimation temperature. In the thermal gradient the fish consistently chose temperatures higher than their acclimation temperature if they were acclimated at 12, 16, 20, or 24/sup 0/C, and a lower temperature when acclimated at 28 and 32/sup 0/C. This suggests that the fish were selecting optimum temperatures of 28 to 30/sup 0/C. Results also demonstrated a strong relationship between thermal tolerance, thermal preference and acclimation temperature. (CUJ)
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