| Family | Scientific Name | Author | Year | Common Name |
| Leuciscidae | Cyprinella labrosa | (Cope) | 1870 | Thicklip Chub |
Cyprinella labrosa
Unique Characters: Conical barbel at corner of mouth. Dark cross-hatching on back and sides. Small brown blotches on the sides. Usually pigment in posterior part of dorsal fin. Compressed but thick body, flattened below. Dorsal-fin origin modally 1 scale (range: 0–2) posterior to pelvic-fin origin. Line drawn from the posterior corner of the upper lip, immediately anterior to the maxillary barbel, does not extend vertically posterior to the anterior edge of the bony orbit. Lateral-line scales modally less than 40 (range: 36–38). Small, dark blotches and cross hatching on back and side. White spot at anterior base of dorsal fin; minimal pigment below lateral line. Restricted to the Yadkin, Catawba, and Broad basins.
Similar Species:
All species of Cyprinella have dark pigment on the last 2-4 interradial membranes of the dorsal fin, but only Thicklip Chub, Siouan Thinlip Chub, and Santee Chub possess maxillary barbels.
Santee Chub
Cyprinella zanema
Santee Chub Cyprinella zanema. Long conical barbel in corner of mouth. Dorsal fin origin two scales behind pelvic origin. Dark crosshatching on back and sides. No blotches on the sides and a slender compressed body. Usually little to no pigment in dorsal fin. Restricted to the Catawba, and Broad basins.
Siouan Thinlip Chub
Cyprinella leptocheilus
Siouan Thinlip Chub Cyprinella leptocheilus. Siouan Thinlip Chub is distinguished from Thicklip Chub by having: 1) modally 40 lateral-line scales vs. 37 lateral-line scales; 2) no dark blotches or cross hatching on back and side vs. small, dark blotches and cross hatching on back and side; 3) no white spot at anterior base of dorsal fin vs. white spot present at anterior base of dorsal fin; 4) side of body well pigmented below lateral line vs. minimal pigment below lateral line; and 5) a line drawn from the posterior corner of the upper lip, immediately anterior to the barbel, extending vertically posterior to the anterior edge of the bony orbit vs. a line drawn from the posterior corner of the upper lip, immediately anterior to the barbel, extending vertically anterior to the anterior edge of the bony orbit.
Siouan Thinlip Chub is endemic to Sand Hills and upper Coastal Plain streams of the Lumber, Cape Fear, and Yadkin River basins.
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