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Loach minnow
The loach minnow (''Rhinichthys cobitis'') is a species of freshwater fish. It is a member of the carp family (family Cyprinidae) of order Cypriniformes. It occurs in streams and small rivers throughout the Gila River and San Pedro River systems in Arizona, New Mexico, and Sonora; it is now considered extinct in Mexico.〔
==Description==
Loach minnow has an elongated, compressed body with its size rarely exceeding in length.〔Minckley, W.L. 1973. Fishes of Arizona. Arizona Game and Fish Department, Phoenix. pp. 133-135.〕 This species have an olivaceous body, highly blotched with darker pigment. They have dirty-white spots before and behind base of dorsal fin, and on lower and upper sides base of caudal. Breeding males have vivid red-orange markings on bases of fins, body, and lower head. Breeding females become yellow on their fin and lower body.〔
In order to distinguished loach minnow from the similar speckled dace, the loach minnow have whitish spots that are present on the origin and insertion of the dorsal fin as well as on the dorsal and ventral portions of the caudal fin base.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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