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River Redhorse

River Redhorse

River Redhorse in Indiana represents one of the rarest native fish species in the state, listed as 'Special Concern' and thought to have been extirpated from several areas including Michigan and Iowa.

Scientific Name: Moxostoma carinatum

Physical Characteristics:
  • This large sucker species can reach impressive sizes of 30 inches and weights over 10 pounds, though most individuals average 10-20 inches.
  • River Redhorse are distinguished by their stout, slightly compressed body, large head (about 1/4 standard length), deeply plicate lips without papillae, and characteristic red tail and dorsal fin.
  • Their enlarged, molar-like pharyngeal teeth set them apart from other redhorse species.

What to know

Habitat Distribution

  • They prefer medium to large-sized rivers with moderate to strong currents, gravel or cobble substrates, and clean, unpolluted water.

Specific Spots

  • Target medium to large rivers with moderate to strong currents, particularly deep run habitats ranging from 1-10 feet deep with gravel or cobble substrates.
  • Focus on areas with clean gravel bottoms and moderate currents.
  • These fish are most often associated with deep run habitats (1-10 feet deep) with moderate currents and gravel bottoms.
  • Target areas where native mussels and snails are present, as these locations will concentrate River Redhorse.

River Redhorse FAQ

Answers from onWater's species guide.

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

Small crayfish, pieces of clam or other mollusks, and various aquatic invertebrates like mayfly nymphs. Since they feed heavily on mollusks and crustaceans, these natural baits are most effective.

What flies work for River Redhorse in Indiana?

Nymph patterns resembling mayflies, caddisflies, and beetles work well, along with crayfish imitations. Size 10-12 black nymphs and smaller beaded woolly buggers can be productive.

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

Late spring (May through early June) when they move into shallower waters for spawning. Avoid targeting them during active spawning periods in early June when water temperatures reach 68-73°F.

How do you catch River Redhorse in Indiana?

Bait fishing using natural offerings that mimic their primary food sources. Fish patterns near the bottom in the deeper run areas they prefer.

What do River Redhorse eat?

These fish are specialized feeders, consuming primarily mollusks and crustaceans - in fact, their diet contains a higher percentage of clams and other mollusks than any other sucker species. They also feed on crayfish, mayflies, beetles, and caddisflies.

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