Traits: Small fish (animal) with a large head, short lateral line ending below the second dorsal fin

Habitat: Lakes and fast-moving streams; adults move to shallow water to spawn.

Foods: Larvae of flies, mayflies, caddisflies, dragonflies, amphipods; also some eggs and young fish

Eaten By: Grebes, loons, mergansers, other fish

Do You Know? Male builds nest and defends eggs against predators. The color of its skin makes it nearly invisible when motionless on river and lake bottoms.