Fish Profile - Warmouth

IDENTIFICATION: Warmouth look similar to rock bass and green sunfish with a thick, oblong body. The mouth is large, with the upper jaw extending to or beyond the middle of the eye. The coloration is dark olive-brown and it is mottled with dark brown blotches over the body. In addition, they have dark colored stripes extending from the eye to the opercle (ear) flap. Warmouth have only three anal fin spines while rock bass have six.

RANGE AND HABITAT: Warmouth prefer weedy lakes, sluggish streams, oxbows, marshes and ponds. They are a secretive fish seeking cover in rocky banks, stumps, or weed masses to avoid direct sunlight.

LIFE HISTORY: Warmouth are not colonial spawners like other sunfish species. However, males do fan out a nest, usually near a rock, stump, clump of vegetation, or other large object. The male guards the nest until the fry disperse. During this time the male will chase intruders off with gill covers spread wide and mouth open, to make himself appear larger. Adults eat primarily crayfish, aquatic sowbugs, aquatic insect larvae, and small fish. Warmouth can take four years to reach 6 inches in length.

ADULT SIZE: Adults usually range from 4 to 10 inches in length.

FISHING METHODS: Warmouth will bite on both natural and artificial baits.

Species Facts

Science Name: Lepomis gulosus Other Names: warmouth bass, warmouth perch, goggle-eye, redeye and goggle-eyed perch Ideal Temp: 78 to 85 World Record: 2 lbs. 7 ounces, Fl. Techniques: light tackle, fly fishing

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