Moxostoma collapsum

Notchlip Redhorse Moxostoma collapsum
Notchlip Redhorse Moxostoma collapsum Lips
FamilyScientific NameAuthorYearCommon Name
CatostomidaeMoxostoma collapsum(Cope)1870Notchlip Redhorse

Moxostoma collapsum

Unique Characters: Circumpeduncle scales modally 12. Lower lip V-shaped, semi-papillose; its fine ridges (plicae) deeply, transversely, and somewhat irregularly dissected. Front of upper lip usually smooth, papillae absent. Lower lip usually abruptly thinned at a point distinctly anterior to it juncture with upper lip. Caudal peduncle deep. Restricted to major Atlantic slope River drainage basins.

Similar Species:

V-lip Redhorse
Moxostoma pappillosum

“Brassy” Jumprock
Moxostoma sp.

Moxostoma pappillosum
V-lip Redhorse – Moxostoma pappillosum
Moxostoma pappillosum lips
Moxostoma pappillosum lips
Moxostoma sp. "Brassy" Jumprock
Moxostoma sp. “Brassy” Jumprock

V-lip Redhorse Moxostoma pappillosum. Circumpeduncle scales modally 12. Lower lip V-shaped. Lower lip papillose, papillae rounded at edges, regularly arranged, small, and mostly subequal or equal in size. Front of upper lip papillose. Lower lip with smoothly curved posterior margin, not abruptly thinned at a point distinctly anterior to its juncture with upper lip. Dorsal fin margin of adults and large juveniles almost always slightly falcate or moderately concave. Caudal peduncle shallow.

“Brassy” Jumprock Moxostoma sp. Circumpeduncle scales modally 16. Lower lip with slight indentation, relatively straight.

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