How do respiration rates, temperature, and metabolic rates affect a fishes activity generally?
As temperature decreases, metabolic rates decrease in fish to keep energy up. When metabolic rates decrease, respiration decreases because the oxygen is unneeded. If you are speaking in general, around 60-80 degrees Fahrenheit is when fish are most active, although it depends on species. A high metabolic rate means a fish will be more active because they will have to eat more to maintain their body mass.
