Smallmouth Buffalo

The Smallmouth Buffalo is a native North American catostomid fish species found throughout Minnesota's major river systems and lakes.
Despite being commonly mistaken for invasive carp, Smallmouth Buffalo are actually native to the Mississippi River drainage and lack the characteristic barbels of carp.
In Minnesota, they represent part of the state's natural fish community and are among the most common commercially sold freshwater fish in the United States.
Scientific Name: Ictiobus bubalus
- Adult Smallmouth Buffalo typically reach 16-24 inches in length, though specimens can grow much larger - up to 66 pounds and 40 inches.
Fishing in Minnesota
What to know
Habitat Distribution
- They can be found in both riverine and lacustrine environments.
Key Locations
- In Minnesota waters, they inhabit the Mississippi River system, including major tributaries.
Specific Spots
- Target areas with moderate current, fine substrates, and aquatic vegetation.
- In rivers, focus on pools, backwaters, eddies, and areas with slower current (less than 20 cm/sec), as they prefer these locations for feeding and resting.
Smallmouth Buffalo FAQ
Answers from onWater's species guide.
What are the best lures and bait for Smallmouth Buffalo in Minnesota?
Effective baits include doughballs, corn, nightcrawlers, cut bait, and minnows, with doughballs and corn being particularly successful when presented on hooks near the bottom.
What flies work for Smallmouth Buffalo in Minnesota?
For fly fishing, small patterns that imitate their natural food sources work well - consider using nymphs, small streamers, and bottom-bouncing flies.
When is the best time to fish for Smallmouth Buffalo in Minnesota?
The best fishing occurs during warmer months when they're more active, particularly in spring and fall when they move to shallower waters. Early morning and evening can be productive times.
How do you catch Smallmouth Buffalo in Minnesota?
Productive techniques include still fishing with bait on bottom, drift fishing, and slow presentations that allow the fish time to locate and inspect the offering. Fly anglers can use techniques similar to those for carp - sight fishing when possible and presenting flies quietly in the fish's path.
What do Smallmouth Buffalo eat?
Their diet consists primarily of detritus, algae scraped from rocks, zooplankton, insect larvae, mollusk larvae, and small crustaceans, using their ventral sucker mouth for bottom feeding.
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