Spotted Bass

Spotted bass (Micropterus punctulatus) in Colorado are a non-native species that have established limited populations, most notably in Horseshoe Reservoir.
Scientific Name: Micropterus punctulatus
- They are olive-green dorsally, becoming white toward the belly, and are similar in appearance to largemouth bass but possess a spiny dorsal fin that is broadly connected to the soft dorsal.
- The species has rows of dark spots below a lateral stripe and a black spot just in front of the tail.
Fishing in Colorado
What to know
Habitat Distribution
- They are habitat generalists that avoid dense aquatic vegetation, instead preferring areas with standing timber and brush piles.
- Spotted bass prefer deeper, clearer water than largemouth bass, with an affinity for open water and current.
Key Locations
- In Colorado, spotted bass can be targeted primarily at Horseshoe Reservoir.
Specific Spots
- Focus fishing efforts on drop-offs, points, and areas with standing timber or brush piles.
- Focus on main lake areas rather than shallow coves, where they inhabit deeper, clearer waters away from dense vegetation.
Spotted Bass FAQ
Answers from onWater's species guide.
What flies work for Spotted Bass in Colorado?
Woolly Buggers are particularly effective, along with Clouser Minnows and Game Changers that provide realistic baitfish action. For surface fishing, foam poppers, deer hair divers like the Dahlberg Diver, and Gurglers work well during low-light periods.
When is the best time to fish for Spotted Bass in Colorado?
Best fishing occurs during spring through fall. Spawning occurs when water temperatures reach 63°F to 78°F, typically March to April in southern regions and May to June in northern areas like Colorado.
How do you catch Spotted Bass in Colorado?
Effective techniques include fishing streamers that imitate baitfish. For surface fishing, use poppers and divers during low-light periods. Night fishing can be productive during summer months when spotted bass take advantage of cooler water temperatures and reduced light to feed actively.
What do Spotted Bass eat?
Adult spotted bass primarily feed on shad, minnows, and other open water forage fish, using both ambush and hunting techniques. They rely heavily on eyesight and consume prey whole. Juveniles feed on zooplankton initially, then transition to aquatic insects, juvenile fish, and crawfish as they grow.
Where do Spotted Bass live in Colorado?
They are habitat generalists that avoid dense aquatic vegetation, instead preferring areas with standing timber and brush piles. Spotted bass prefer deeper, clearer water than largemouth bass, with an affinity for open water and current.
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