RIVER FISH · Rocks & cover

Rock bass

Ambloplites rupestris

A stocky, large-mouthed sunfish with reddish eyes and dark spots on brassy or olive sides.

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Rock bass sheltering near a rocky bottom
Photo: Ryan Hagerty / USFWS · Public domain ↗

Meet the fish

Habitat
Clear streams with cobble, boulders, bedrock, vegetation and other cover.
On the menu
Crayfish, insects and small fish.
Size context
Virginia DWR reports an average of 6–8 inches in Virginia; this is a regional reference, not a national limit.
Range & local context
Present in many Virginia watersheds, but native there only in southwestern drainages. Consult regional agency profiles for local distribution and native status.
Biology sources:Virginia DWR ↗

Living with the river

Water & habitat

Rocky habitat and nearby cover are useful context for this species. A flow reading measures water passing a station, not the amount of shelter or fish in a particular pool.

Seasonal life

Males construct and defend gravel nests in spring and summer.

Biology sources:Virginia DWR ↗
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.

Before you go

Do not confuse rock bass with every fish called 'rockfish'; that common name can refer to other species.

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.

Biology sources:Virginia DWR ↗

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

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