Figure 7. Predicted and measured relations between acclimation temperature and preferred temperature for juvenile Dover sole (S. solea).

For fish in category 1 the preferred temperature increases with acclimation temperature until they equal each other at the final preferendum. Beyond the final preferendum, here set at the measured optimal growth temperature, the preferred temperature stabilises. For fish in category 2 the preferred temperature is independent from the acclimation temperature and lies close to the final preferendum and optimal growth temperature. The measured acute preference increases with acclimation temperature.