The Effects of High Temperature on the Immune System

Some bacteria, though, grow better at higher temperatures. Is it still beneficial to the fish to go to that higher temperature or is there a middle ground and do they know what that middle ground is? That was one of the concerns going in. Fever is typically thought about moving pathogens away from the temperature that they prefer. Yet we understand that many of these pathogens do better at the warmer temperatures. In our case, the aromones bacteria that we use grew better at the higher temperatures. The fish were much better equipped to combat this pathogen when they got the chance to move to this warmer temperatures.