Gray Redhorse
A medium-sized native sucker of the southwestern US, the Gray Redhorse is essentially a Texas and far-southern New Mexico fish — at home in the clear, spring-fed rivers of the Hill Country and the Pecos and Rio Grande drainages.
Most anglers encounter them by accident while nymphing for bass or trout, but for the rough-fish crowd they're a genuine trophy.
Scientific Name: Moxostoma congestum
Also known as matalote gris, gray jumprock
- Cylindrical, fusiform body — grayish-black to greenish on top, fading to silvery sides and a white belly, with a dusky tail.
- The dead-giveaway ID mark: black-banded membranes streaking the dorsal and caudal fins, a feature no other US redhorse shares.
- Classic sucker face — broad snout, small ventral mouth, and plicate (folded) lips built for vacuuming the bottom.
- Adults typically run around 20 inches; the species tops out near 25 inches, with the IGFA all-tackle record sitting at 3 lbs 8 oz.
What to know
Habitat Distribution
- Native to a small slice of the southwestern US — Texas from the Brazos drainage west and south through the Rio Grande and Pecos basins, plus the lower Pecos and Black River in southern New Mexico. Absent from the eastern US and the Mississippi basin entirely.
- A warm-water stream fish that holds in clear-to-moderately-turbid small and medium rivers with rock, sand, or gravel bottoms; also turns up in Hill Country reservoirs.
- Firm substrate is the constant — silt-choked reaches are largely avoided, though adults tolerate some turbidity.
Specific Spots
- Adults sit in deep pools with firm sand or silt bottoms, where they can root through the substrate for invertebrates without fighting current.
- Young fish and subadults school loosely in riffles and gravelly runs — a different look entirely from the solitary, pool-oriented adults.
- In spring, mature fish push upstream into shallower flowing sections with clean gravel or cobble to spawn.
- Limestone-bottomed pools below riffles in clear spring-fed rivers are the classic Hill Country spot — gray sides blend right into the gravel.
Gray Redhorse FAQ
Answers from onWater's species guide.
What are the best lures and bait for Gray Redhorse?
Earthworms and nightcrawlers fished on the bottom are the genus-wide standard and the easiest entry point for redhorse. Crayfish and small live or imitation aquatic insects line up directly with what these fish actually eat.
What flies work for Gray Redhorse?
Subsurface nymphs are the whole game. A double-nymph rig, an attractor up top, a smaller natural nymph trailing, fished deep through pool tailouts is the reported go-to on Hill Country rivers.
What do Gray Redhorse eat?
A bottom-feeding invertivore, mostly aquatic insect larvae, mollusks, amphipods, and ostracods, with bits of algae, seeds, and the rare small fish rounding it out.
Where do Gray Redhorse live?
Native to a small slice of the southwestern US, Texas from the Brazos drainage west and south through the Rio Grande and Pecos basins, plus the lower Pecos and Black River in southern New Mexico. Absent from the eastern US and the Mississippi basin entirely.
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