Bull trout feed on aquatic insects and crustaceans, but will eat fish and other animals like frogs, snails, and mice when available.
(Bull trout feed on aquatic insects and crustaceans; will eat; fish and other animals like frogs, snails, and mice; T:when available)
Bull trout feed on aquatic insects and crustaceans
will eat
fish and other animals like frogs, snails, and mice T:when available