Question

fish species diversity is significantly lower in reservoirs than in rivers

Answer 1

A great number of fish species can be found on seawaters because they can only survive there same with fresh water fish species.Every species need the right habitat some species of fish need warmer while others needs colder water.Due top current in reservoirs most fish are less likely to live in this type of water ,with the slow currents on the reservoirs predators are most likely to attack fish.