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Rock bass

Information & Facts

Species Name
Rock bass
(Ambloplites rupestris)

Common Names
Panfish

Size Range
The average rock bass is between 6-10 inches, and they are rarely over a pound.

State Record
1.38 lbs; William Jackson; Steilacoom Lake, Pierce County; June 26, 1981

Description
Rock bass, warmouth and green sunfish are similar in appearance. None of the three is common in the state. They are stockily built, and from a side view have a body shape somewhat like the bluegill. Their mouths are quite large and strong in comparison to the bluegill and pumpkinseed, though. Both rock bass and warmouth have reddish eyes, especially noticeable in freshlycaught rock bass. To tell them apart, remember that the rock bass has five (or more) spines in its anal fin, while the warmouth and green sunfish have only three. The warmouth has a small band of teeth near the tip of its tongue, and fewer than 45 scales in the lateral line. The green sunfish has no teeth near the tip of the tongue, has more than 45 scales in the lateral line, and has a dark spot at the base of the last three soft dorsal rays.

Where to fish for Rock bass
Rock bass seem to do best in streams and lakes with clear water and rocky bottoms. Their distribution in Washington is probably confined to a few lakes and small tributary streams in Pierce and Thurston Counties, and in slower stretches of the Chehalis River in Lewis County. Please note that bass slot limits DO NOT apply to rock bass.

How to fish for Rock bass
This species is aggressive, sometimes striking lures almost as large as they are. Most common baits, plus a wide variety of artificial lures, will take them. Because of their robust build, they are strong fighters on light tackle.