RIVER FISH · Rocky-water resident

Smallmouth bass

Micropterus dolomieu

A bronze-to-olive bass associated with rocky streams, pools and cover. Its closed jaw does not extend behind the eye.

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Smallmouth bass beside submerged wood
Photo: Brett Billings / USFWS · Public domain ↗

Meet the fish

Habitat
Clear, well-oxygenated streams with gravel, rock ledges and deeper pools.
On the menu
Crayfish, smaller fish and aquatic insects; diet changes as the fish grows.
Size context
10–18 inches is the average-length range reported by South Carolina DNR; sizes vary by waterbody.
Range & local context
Native in some eastern U.S. drainages and introduced in others. South Carolina populations are introduced; Virginia's native range includes southwestern drainages.

Living with the river

Water & habitat

Clean gravel and oxygenated water matter. Sediment, warming and pollution can reduce suitable habitat; one streamflow number cannot describe all of those conditions.

Seasonal life

Males build shallow gravel nests in spring and guard eggs and young. Nesting dates vary with local water temperature.

Read the water, not a fishing score. Gauge readings describe one monitoring location. They do not prove fish are present, predict a bite, establish safe access or replace current fishing rules. Check the observation time and the specific stretch of river.
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Before you go

Native status and fishing rules are local, not universal. Consult the agency responsible for the specific river.

Use the linked agencies and the relevant river guide for current regulations, closures and consumption advisories. A species profile is not a fishing license or a statement that harvest is allowed.

Editorial review: . Regional size examples are labeled; maximum lengths are not typical sizes.

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