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River Redhorse

River Redhorse

River Redhorse (Moxostoma carinatum) is Michigan's largest redhorse species and one of the rarest, reaching lengths over 30 inches and weights exceeding 10 pounds. Listed as threatened in Michigan, fewer than 10 populations exist statewide.

These native suckers are distinguished by bright red fins, a pointed dorsal fin, large bodies (adults usually over 20 inches), and 12-13 scales around the tail base. They possess unique molar-like pharyngeal teeth for crushing shells.

Scientific Name: Moxostoma carinatum

Physical Characteristics:
  • Michigan's largest redhorse species, reaching lengths over 30 inches and weights exceeding 10 pounds.
  • Distinguished by bright red fins, a pointed dorsal fin, large bodies (adults usually over 20 inches), and 12-13 scales around the tail base.
  • They possess unique molar-like pharyngeal teeth for crushing shells.

What to know

Habitat Distribution

  • They prefer medium to large rivers with rocky or gravelly bottoms, moderate to strong currents, and deep run habitats typically 1-10 feet deep.

Key Locations

  • Found only in the Grand, Muskegon, and St.
  • Joseph river watersheds.
  • Focus efforts on the Grand River system near Grand Rapids.
  • In the Muskegon River system, look for deep runs and pools with clean substrate.
  • The St.
  • Joseph River watershed also holds populations.

Specific Spots

  • Target areas near mussel beds and rocky substrates where their preferred food sources concentrate.
  • They prefer deeper pools and runs with slower current over fast riffles when not spawning.

River Redhorse FAQ

Answers from onWater's species guide.

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

Live bait is most effective - pieces of nightcrawler, small crayfish, or naturally found clams are productive.

What flies work for River Redhorse in Michigan?

Productive patterns include size 10-12 black nymphs, small beaded woolly buggers, clouser minnows, and clam-imitating patterns.

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

Late spring through early fall when they're actively feeding, avoiding the spawning period from late May through mid-June.

How do you catch River Redhorse in Michigan?

Bottom-running rigs that slowly bounce along the current. Watch your line tip carefully for subtle strikes - River Redhorse often engulf flies deliberately rather than striking aggressively. Fish deeper pools and runs with slower current during feeding periods.

What do River Redhorse eat?

River Redhorse are specialized feeders, primarily consuming native mussels, snails, and other invertebrates which they vacuum from river bottoms using their fleshy lips.

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