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Bigmouth Buffalo

Bigmouth Buffalo

Bigmouth Buffalo in California are a non-native species established in the Indian Wells-Searles Valleys since their introduction between 1948-1976.

Commercial fishermen likely transplanted them from Arizona to provide a source closer to the Los Angeles Fish Market, and they were also introduced to the Los Angeles aqueduct system.

Scientific Name: Ictiobus cyprinellus

Physical Characteristics:
  • These are massive freshwater fish, the largest members of the sucker family, capable of reaching over 4 feet in length and 80+ pounds.
  • They're distinguished from carp by their lack of serrated dorsal spine and their terminal, forward-facing mouth with thin lips positioned at eye level.

What to know

Habitat Distribution

  • They inhabit slow-moving waters less than 16 feet deep and are highly tolerant of poor water conditions and prefer mud-bottomed areas.

Key Locations

  • Indian Wells-Searles Valley areas, Los Angeles aqueduct system.

Specific Spots

  • Look for fish in areas with 50-75% pools, backwaters, marsh areas, and protected embayments.

Bigmouth Buffalo FAQ

Answers from onWater's species guide.

What flies work for Bigmouth Buffalo in California?

Small nymph patterns, midge imitations, glo bugs (especially white), woolly buggers with 1/100 oz marabou jigs, carp crack patterns, and foxy lady flies.

How do you catch Bigmouth Buffalo in California?

Present flies slowly and directly in front of feeding fish - they rarely move more than 3-4 feet to take flies. Use bottom-fishing techniques with flies anchored or barely rolling across rocks. For conventional tackle, try bottom-fishing techniques. Bowfishing is popular but requires careful species identification.

What do Bigmouth Buffalo eat?

Unlike other buffalo species, Bigmouth Buffalo are filter-feeders with over 60 fine gill rakers that strain plankton from water. They feed primarily on zooplankton including cladocerans and copepods, supplemented by algae, chironomids (midge larvae), ostracods, and other small invertebrates.

Where do Bigmouth Buffalo live in California?

They inhabit slow-moving waters less than 16 feet deep and are highly tolerant of poor water conditions and prefer mud-bottomed areas.

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