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Mountain madtom
The mountain madtom (''Noturus eleutherus'') is a North American species of temperate freshwater fish belonging to the Noturus genus of the Ictaluridae family. The species was first described to the United States National Museum by Professors Jordan and Gilbert in the Big Pigeon River.〔 The mountain madtom has a body that is characterized as being robust, and by the toxic sting that is associated with their pectoral and dorsal spines.〔Swain, J., and G.B. Kalb. 1883. A review of the genus ''Noturus'' with a description of one new species. ''Proceedings of the United States National Museum'' 5:638-644.〕 Currently, the Pigeon River Recovery Project is working to try to restore the mountain madtom population that was lost in fisheries. Aside from the Pigeon River Recovery Project, there is little management being applied to this species, and it is currently listed on the threatened species list for the state of Tennessee.
==Geographic distribution==
The mountain madtom has a broad distribution. Its native range includes larger streams of the Mississippi River drainage for the Little River system of southeastern Oklahoma northeastward.〔Starnes, B., Lynn, and Wayne C. Starnes. 1985. Ecology and Life History of the Mountain Madtom,Noturus eleutherus (Pisces: Ictaluridae). ''American Midland Naturalist'' 114: 331-334.〕 East of the Mississippi it appears through the Ohio drainage to western Pennsylvania.〔(【引用サイトリンク】publisher=Florida Museum of Natural History )〕 In the south-east it occurs in the Cumberland and Tennessee drainages. In the Tennessee, Cumberland, and Green systems it is confined to the Highland Rim.〔 It is also found in the North Fork Holston, Clinch, and Powell rivers. Generally the mountain madtom is restricted to ridge and valley areas. In the Ohio river basin the mountain madtom and the northern madtom occur in very similar environments but usually not together.〔Thomas, R., Matthew. 2002. Morphological Discrimination of Notrus Stigmosus and N. Eleutherus
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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