Margariscus nachtriebi (Cox 1896)

Margariscus nachtriebi can be distinguished by the possession of the following characters: usually complete lateral line; 60-75 small lateral scales; short head; fairly deep caudal peduncle; flaplike barbel in groove above mouth (often missing on 1 or both side); almost cylindrical body; rounded snout; small, slightly subterminal mouth (seldom reaching front of eye); origin of dorsal fin behind origin of pelvic fin; 8 dorsal rays; 8 anal rays; and pharyngeal teeth 2,5-4,2. Body dark olive gray above, often with black herringbone lines, dark stripe along back; many small black and brown specks (absent in western populations) on silver side; white, yellow or red below; black stripe along side, black caudal spot on young; stripe vague on adult. Breeding male has bright orange-red lower side, pale yellow stripe along belly and many small tubercles on head (Ref. 86798).

Dorsal soft rays (total): 8; Analsoft rays: 8

Inhabits pools of creeks and small rivers, ponds and lakes. Usually found over sand or gravel (Ref. 86798).

The northern pearl dace (Margariscus nachtriebi) is a freshwater ray-finned fish in the family Cyprinidae, the carps and minnows. It occurs in Atlantic, Hudson Bay, Great Lakes, and Mississippi River basins in the northern United States and Canada. Its preferred habitat is cool, clear headwater streams, bog drainage streams, ponds and small lakes, and in stained, peaty waters of beaver ponds, usually over sand or gravel.

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Margariscus nachtriebi Margariscus generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.