Smallmouth Redhorse
A red-tailed sucker of clean, swift rivers across the Ohio River drainage and southern Appalachian headwaters, smallmouth redhorse won't tolerate silt or pollution — their presence is a reliable sign the water you're standing in is healthy.
Anglers who pursue them on purpose tend to do so for the puzzle: getting a sub-terminal-mouthed bottom feeder to commit to a small hook in fast current is genuinely difficult work.
Scientific Name: Moxostoma breviceps
Also known as hookfin redhorse
- Slender, gold-to-silver body with an olive-brown back, white-to-yellowish belly, and a vivid red tail fin that lights up in a gravel riffle.
- Deeply concave dorsal fin (curves strongly inward) — the key feature separating it from the very similar shorthead redhorse, whose dorsal is shorter and far less concave.
- Small head and mouth relative to body size — the name breviceps means "short head" — with large fleshy lips and a sub-terminal mouth set for vacuuming the substrate.
- Typical adults run 12–16 inches and 1–2 pounds; a good one stretches to 20 inches and around 3 pounds, with maximum recorded length close to 24 inches.
What to know
Habitat Distribution
- Strictly native to the Ohio River drainage from the mid-Atlantic south through the Tennessee and Cumberland systems, with no introduced populations and no records from Canada.
- A clean-water specialist — intolerant of pollution, siltation, and turbidity, which makes it a reliable bioindicator of intact watersheds.
- Lives in medium-to-large rivers and their larger tributaries, always over rocky, sandy, or gravelly bottom; clay and silt substrates are a hard pass.
- In southern Appalachian headwaters its range overlaps several other red-tailed redhorse species, including the state-listed sicklefin redhorse — careful ID matters there.
Specific Spots
- Shallow runs and the heads and tails of riffles with steady current and a clean sand-rock-gravel bottom — prime sight-fishing water in clear conditions.
- Outside the spawn, fish drop into deep raceways and firm-bottomed pools and use the adjacent fast-water runs as feeding lanes.
- During spring spawning runs, smaller tributary streams below larger rivers concentrate fish at the tops and bottoms of shallow gravel riffles, often in groups of three to seven.
Smallmouth Redhorse FAQ
Answers from onWater's species guide.
What are the best lures and bait for Smallmouth Redhorse?
Nightcrawlers and red worms are the bait, most dedicated redhorse anglers fish almost nothing else, and for good reason. Crayfish, small snails, clams, and aquatic insect larvae also produce, since they match what the fish actually eat off the bottom.
What flies work for Smallmouth Redhorse?
Heavy, weighted nymphs in size 10–14, bead-head stonefly and caddis patterns are the standard. The fly needs to sink fast and be stopped dead on the bottom directly in front of the fish; a drifting fly almost never gets eaten.
What do Smallmouth Redhorse eat?
Snails, small clams, and aquatic insect larvae make up the bulk of the diet, picked off the bottom as the fish moves slowly over substrate and vacuums them in, they don't chase prey.
Where do Smallmouth Redhorse live?
Strictly native to the Ohio River drainage from the mid-Atlantic south through the Tennessee and Cumberland systems, with no introduced populations and no records from Canada. A clean-water specialist, intolerant of pollution, siltation, and turbidity, which makes it a reliable bioindicator of intact watersheds.
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