Elongated body, snout shaped like a duck’s bill, large mouth with many sharp teeth. Back and sides olive or yellowish brown with a chainlike pattern of dark lines. Dorsal, or back fin, placed far back on the body. Similar to the smaller grass pickerel, which attain an average size of 10 to 12 inches, but both species seldom found in same waters. Adults lie motionless in dense stands of vegetation and ambush prey with a quick darting motion.