Nocomis platyrhynchus

Nocomis platyrhynchus
Bigmouth Chub – Nocomis platyrhynchus
FamilyScientific NameAuthorYearCommon Name
LeuciscidaeNocomis platyrhynchusLachner & Jenkins1971Bigmouth Chub

Nocomis platyrhynchus

Unique Characters: Large, stout body. Conical barbel at corner of large, slightly subterminal mouth. Long snout; small eye high on head. Usually 60-200 tubercles on head that extend from the snout to well behind the eyes; tubercles on snout and below nostril. Wide mouth. Breast usually well scaled. Breeding male has pink-blue head with a hump. Restricted to the New basin.

Similar Species:

Nocomis tubercles
A. Bluehead Chub – N. leptocephalus. B. River Chub – N. micropogon. C. Bigmouth Chub – N. platyrhynchus.
Photo Credit: Luke Etchison NCWRC

River Chub
Nocomis micropogon

Nocomis micropogon
River Chub – Nocomis micropogon

River Chub Nocomis micropogon. Usually fewer than 60 tubercles on head and do not extend behind the eyes. Breeding male has pink-blue head with large hump.

Bull Chub
Nocomis raneyi

Nocomis raneyi
Bull Chub – Nocomis raneyi

Bull Chub Nocomis raneyi. Nearly identical to Bigmouth Chub but the Bull Chub also has a smaller mouth and is restricted to the Roanoke, Tar, and Neuse basins, whereas the Bigmouth Chub is endemic to the New basin.

Bluehead Chub
Nocomis leptocephalus

Nocomis leptocephalus
Bluehead Chub – Nocomis leptocephalus

Bluehead Chub Nocomis leptocephalus. Strongly whorled intestine and tubercles on the head behind the nostrils.

Creek Chub
Semotilus atromaculatus

Semotilus atromaculatus
Creek Chub – Semotilus atromaculatus

Creek Chub Semotilus atromaculatus. Has a small flap-like triangular barbel in the groove near the corner of the mouth and a well-defined black spot at the base of the dorsal fin. Dorsal fin origin is behind pelvic fin origin.

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