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Naked sand darter
==Description==
The naked sand darter (''Ammocrypta beanii'') is a member of the family Percidae. 〔Page, L. M., H. Espinoa-Pérez, L. T. Findley, C. R. Gilbert, R. N. Lea, N. E. Mandrak, R. L. Mayden, and J. S. Nelson. 2013. Common and scientific names of the fishes from the United State, Canada, and Mexico, 7th edition. American Fisheries Society, Special Publication 34, Bethesda Maryland.〕 It is a small fish ranging in size from 40 to 50 mm long, the maximum being around 64 mm. Being a long thin darter, it is devoid of scales with the exception of a few rows above and below the lateral line and sometimes the caudal peduncle. Slightly transparent in life with a yellow color and iridescent operculum, the naked sand darter blends in with its habitat. It has darker bands in the dorsal, anal, and caudal fins with a whitish base and tip. Males of breeding size with have a dark spot at the front of the dorsal fin. Unlike similar darters, it does not have an opercular spine. 〔Ross, Stephen T., and William M. Brenneman. "Species Accounts." The inland fishes of Mississippi. Jackson: University Press of Mississippi, 2001. 449-451. Print.〕
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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