Largemouth Bass

Largemouth Bass are considered non-native to Wyoming, having been introduced to provide recreational fishing opportunities. Wyoming's populations are well-established in these locations despite being outside their native range.
Scientific Name: Micropterus salmoides
- They're distinguished by their large mouth extending far behind the middle of the eye, with spiny and soft dorsal fins that are nearly separate, featuring 3 anal spines and typically 10 dorsal spines.
- In Wyoming, they typically range from 12-18 inches, though specimens exceeding 20 inches are caught.
Fishing in Wyoming
What to know
Habitat Distribution
- They're found primarily in warmer waters.
- They prefer clear, vegetated lakes, ponds, and reservoir backwaters with submerged aquatic vegetation for cover.
Key Locations
- Wyoming's Boysen Reservoir, Keyhole Reservoir, and parts of Flaming Gorge Reservoir.
Specific Spots
- Target areas with cover like submerged logs, weed beds, and rocky points where bass ambush prey.
- Around submerged vegetation, fallen trees, docks, and rocky structure.
Largemouth Bass FAQ
Answers from onWater's species guide.
What flies work for Largemouth Bass in Wyoming?
Bass poppers in bumblebee, frog, and chartreuse patterns. Foam poppers and deer hair bass bugs for topwater strikes. For subsurface fishing, use baitfish patterns like Clouser Minnows, Deceivers, and Game Changers in white/chartreuse or patterns with green contrast. Crayfish patterns like Wooly Buggers in brown/olive.
When is the best time to fish for Largemouth Bass in Wyoming?
Spring and fall when they're most active. During spawning season (typically late April through June in Wyoming), bass should not be targeted as they're protecting e.g.gs and fry. In summer, fish deeper waters during hot days and focus on shaded areas.
How do you catch Largemouth Bass in Wyoming?
For fly fishing, work bass poppers with short twitches and 2-3 second pauses. For subsurface fishing, bounce crayfish patterns along the bottom. Bass respond well to aggressive presentations since they strike even when not hungry.
What do Largemouth Bass eat?
Largemouth bass are voracious ambush predators with an opportunistic feeding strategy - they literally consume anything that fits in their mouth including fish, crayfish, frogs, snakes, birds, mice, and other critters.
Where do Largemouth Bass live in Wyoming?
They're found primarily in warmer waters. They prefer clear, vegetated lakes, ponds, and reservoir backwaters with submerged aquatic vegetation for cover.
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