Iowa Fishing Regulations - Iowa Department of Natural Resources

Trout
Rainbow Trout
Olive to greenish-blue above and silvery below with a prominent
horizontal red band on the side. There are many small, dark spots on the
body, dorsal fin and tail.
Brown Trout
Olive to greenish-brown. The large black and reddish-orange spots on
the sides of the fish have a pale border. The lower portions of the fish are
yellow, fading to gray or white beneath. Browns have few or no spots on
the tail fin.
Brook Trout
Vivid white markings on the front edges of the lower fins. They also have
light “wormlike” markings on the back. General color: olive to gray-green.
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