Wormlike markings on back. Fins along belly have distinct, white leading edge. Brown Trout End of upper jaw extends well past rear edge of eye. Tail fin square with few spots or none. Rainbow Trout Pink or red band usually present on side of fish.
Tail fin with many dark spots.
Many small spots on body. Fish in lakes often silvery. Lake Trout Light spots on darker background. No red spots. Tail deeply forked.