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Hybopsis amnis : ウィキペディア英語版 | Hybopsis amnis
The Pallid Shiner, ''Hybobsis amnis'', is a small freshwater minnow in the Cyprinidae family. It may also be called by a different binomial name, ''Notropis amnis''.〔Phillips, Gary L., Schmid, William D., and Underhill, James C. 1982. Fishes of the Minnesota Region. University of Minnesota Press. Minneapolis, MN. pg. 133〕 They are native to North America and can be found in the Mississippi watershed. The pallid shiner is considered a rare fish in its northern distribution but not in its southern distribution. The pallid shiner was first discovered in the early 1900s in the St. Croix river north of Taylor Falls, and its population has been declining since.〔 Little is known about their feeding and reproductive habits. == Physical description == The pallid shiner is a small silver fish with very little pigmentation on its fusiform body and like most fishes, it is laterally flattened.〔Pallid Shiner, (University of Wisconsiin Sea Grant Institute ), 2013. Retrieved 2015-04-23〕 The only marking on its body is a thin lateral stripe that extends from its head to its tail. The scales on its body are composed of round lateral scales called cycloid scales. It has a slightly subterminal mouth and no adipose fin. Like other members of the Cyprinidae family, the pallid shiner is a toothless fish and has no stomach. Instead they chew their food using gill rakers on their gills and pharyngeal teeth.〔Cyprinidae, Carps and Minnows. Encyclopedia of Life. (). 2010. Retrieved 2015-05-07.〕 Its caudal fin is white and is forked with pointed tips.〔 The dorsal fin of the pallid shiner is high and has eight soft rays.〔Eddy, S., and J. C. Underhill. 1974. Northern fishes, with special reference to the Upper Mississippi Valley. Third edition. University of Minnesota Press, Minneapolis, Minnesota. 414 pp.〕 The pelvic fins are abdominal.〔
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