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River Redhorse

River Redhorse

The River Redhorse is one of Pennsylvania's largest sucker species, capable of reaching 25-30 inches and weights exceeding 10 pounds. The species has exhibited population increases in recent years due to water quality improvements in the Ohio River basin.

Scientific Name: Moxostoma carinatum

Physical Characteristics:
  • River Redhorse are distinguished by their moderate-sized head, deeply plicate lips, bright red caudal fin, and distinctive molar-like pharyngeal teeth used for crushing shells.

What to know

Habitat Distribution

  • River Redhorse prefer medium to large rivers with moderate to swift currents, clean gravel or cobble substrates, and riffle-run habitats.

Key Locations

  • In Pennsylvania, they're found primarily in the Allegheny River and its larger tributaries, as well as in Lake Erie tributaries.
  • Target the Allegheny River system.

Specific Spots

  • Target deep runs, pools with moderate current, gravel-bottomed areas, and riffle margins.

River Redhorse FAQ

Answers from onWater's species guide.

What are the best lures and bait for River Redhorse in Pennsylvania?

Use pieces of nightcrawler, small crayfish, or naturally found cut clam - they're particularly attracted to mollusk scents.

What flies work for River Redhorse in Pennsylvania?

Use heavy nymphs in size 10-12, small beaded woolly buggers, clouser minnows, and patterns tied to resemble clams.

When is the best time to fish for River Redhorse in Pennsylvania?

Target from late summer through fall when they're actively feeding after spawning. The best fishing occurs during their spring runs (before spawning) and again in late summer when they're feeding heavily to prepare for winter.

How do you catch River Redhorse in Pennsylvania?

Use bottom-fishing techniques. When sight-fishing in clear water, cast upstream of visible fish and use current to swing bait toward them, stopping it on the bottom inches from their face.

What do River Redhorse eat?

They're specialized feeders, with mollusks comprising about 25% of their diet - more than any other sucker species. Their diet includes freshwater clams, mussels, snails, crayfish, aquatic insect larvae, and various benthic invertebrates.

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