My Home Page Aquaculture Information Newsletter Temperature Water temperature affects fish activity, behavior, feeding, growth, and reproduction. Fish are cold-blooded, and their temperature is approximately the same as their surroundings. 95 F, optimum temperature, 65-82 F. Again, since fish take on the surrounding temperature, they cannot tolerate rapid changes in temperature. This becomes most important when stocking and the live haul truck's water temperature differs from the receiving pond water temperature. The recommended acclimation rate is for every 10 F change in temperature temper fish for 20 minutes.
Temperature also determines the amount of dissolved oxygen in the water.
The cooler the water temperature, oxygen is more soluble. That is, there is more oxygen in cool water than warm water. 8.8 8.2 7.9 7.6 Temperature has a major role in the pond stratification. Temperature difference causes density differences. Density differences result in two layers being formed within a pond.