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Rock Bass

Rock Bass

Rock Bass are not native to Montana but have been introduced to the state. They are aggressive predators and schooling fish that often compete aggressively for food, making them relatively easy to locate once found.

Rock Bass can live 8-10 years and are known for their aggressive strikes and willingness to bite various baits and lures.

Scientific Name: Ambloplites rupestris

Also known as goggle-eye, redeye

Physical Characteristics:

These fish are characterized by their large, distinctive red to orange-red eyes along with a robust body featuring horizontal rows of black spots on their brownish-green sides.

According to Montana Fish, Wildlife & Parks records, the state record Rock Bass weighed 1. 31 pounds and measured 10. 8 inches.

What to know

Habitat Distribution

Rock Bass prefer clear, rocky-bottomed waters with plenty of cover such as submerged logs, rocky outcrops, and vegetation. In Montana's cooler waters, they seek areas with moderate temperatures and good structure.

Key Locations

Lower Crazy Head Springs Pond

Specific Spots

Target rocky areas, dock structures, riprap banks, bridge pilings, and submerged timber in 2-12 feet of water. They typically inhabit depths of 2-12 feet and are commonly found around docks, bridge pilings, and riprap areas.

Rock Bass FAQ

Answers from onWater's species guide.

What are the best lures and bait for Rock Bass in Montana?

Small jigs (1/16 to 1/4 ounce), spinners, small crankbaits, nightcrawlers, small minnows, and crayfish

What flies work for Rock Bass in Montana?

Small streamers, woolly buggers, crayfish patterns, nymph patterns like pheasant tail nymphs and hare's ear nymphs

When is the best time to fish for Rock Bass in Montana?

Spring and summer offer the best fishing opportunities when water temperatures are between 60-80°F

How do you catch Rock Bass in Montana?

Rock Bass respond well to fast-moving presentations that trigger their aggressive nature, but also take slow finesse presentations. Fish close to structure and cover, casting right to the banks and working lures back through likely holding areas. Use weedless presentations around heavy cover to avoid snags.

What do Rock Bass eat?

Rock Bass are aggressive predators with a diet consisting primarily of crayfish, aquatic insects (including chironomid and neuropteran larvae), terrestrial insects, and smaller fish including minnows and even their own species.

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