| Family | Scientific Name | Author | Year | Common Name |
| Catostomidae | Moxostoma collapsum | (Cope) | 1870 | Notchlip Redhorse |
Moxostoma collapsum
Unique Characters: Circumpeduncle scales modally 12. Upper and lower lips semi-papillose. Plicae in lower lip deeply, transversely, and somewhat irregularly dissected, resulting in papillae-like subdivisions that are irregularly arranged and unequal in size. Lower lip abruptly thinned at its juncture with upper lip. Dorsal-fin margin of large juveniles and adults convex, straight, or slightly concave. Profile moderate or highly elevated toward dorsal fin. Scale bases pale. Caudal peduncle deep. Restricted to major Atlantic slope River drainage basins (Hogue et al. 2026).
Similar Species:
V-lip Redhorse, Moxostoma pappillosum
V-lip Redhorse, Moxostoma pappillosum. Circumpeduncle scales modally 12. Upper and lower lips papillose, papillae rounded at edges, regularly arranged, small, and mostly equal in size. Lower lip with smoothly curved posterior margin, not abruptly thinned at its juncture with upper lip Dorsal-fin margin of large juveniles and adults almost always slightly to moderately falcate. Profile elongate, slightly or not at all elevated toward dorsal fin. Scale bases dark. Caudal peduncle shallow (Hogue et al. 2026).
Reference:
Hogue, G.M., B.H. Tracy, J.A. Raine, and L.C. Hughes. 2026. Carolina Redhorse – a new species of Moxostoma (Cypriniformes: Catostomidae) from North Carolina and South Carolina, USA. Zootaxa 5763 (4):501-528. 10.11646/zootaxa.5763.4.3.
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