Question

why do the fish go deep in Shallow water during summer

Answer 1

Generally, fish are in shallower water in low light and choppy conditions, and in deeper water when the sun is bright and winds are calm. ... Summer heat sends fish deeper to find cooler temperatures, but not to the bottom, where there is little oxygen. Fall fishtend to remain deep.

Answer 2

For this reason, fish goes deeper in the water where the oxygen content is higher. The shallow water is warmer during the day due to which it has less dissolved oxygen. So the fish tend to go in deep water duringthe day time.