Fishing Field GuideIdentification desk
Comparative plate

Fish
Identification

Use several traits together—body profile, mouth position, fin shape, markings and habitat. Color alone changes with water, season, age and stress.

Permanently labeled fish identification illustration
Natural-history comparison plate

Largemouth bass

Look for: jaw beyond eye; deep mouth; broken dark lateral band.

Smallmouth bass

Look for: jaw near eye; bronze body; vertical bars.

Striped bass

Look for: streamlined silver body with horizontal stripes and separated dorsal fins.

Black crappie

Look for: irregular black mottling; usually seven or eight dorsal spines.

White crappie

Look for: dark vertical bars; usually five or six dorsal spines.

Bluegill

Look for: deep body, small mouth, dark ear flap and dorsal spot.

Redear sunfish

Look for: red or orange ear-flap margin and slightly larger mouth.

Yellow perch

Look for: yellow-gold sides, dark vertical bars and orange lower fins.

Channel catfish

Look for: forked tail, young-fish spots and curved anal-fin edge.

Blue catfish

Look for: forked tail, slate-blue body and long straight-edged anal fin.

Rainbow trout

Look for: pink lateral wash and black spots across body and tail.

Brook trout

Look for: pale wormlike marks, red blue-haloed spots and white fin edges.

Summer flounder

Look for: both eyes on the left side, flat body and ocellated spots.

Red drum

Look for: copper-bronze body and black spot near the tail base.

Enlarged fish identification plate