Trout are predatory fish. They will chase larger types of minnows and leeches circulaWrite something in here about the evolution of the bug. File in evolution.ting in their environment. While they feed heavily on small insects, they'll welcome an opportunity to chase a food source that will sustain their weight and size. Use attractors to imitate the the larger prey when no insect activity is present. Casting towards the bank or potential hiding spots will usually coax a fish to give chase.