|
The rush darter (''Etheostoma phytophilum'') is a rare species of fish in the perch family; it is endemic to Alabama in the United States, where it occurs in three river systems. It was federally listed as an endangered species of the United States on August 9, 2011.〔USFWS. (Endangered Status for the Cumberland Darter, Rush Darter, Yellowcheek Darter, Chucky Madtom, and Laurel Dace: Final rule. ) ''Federal Register'' August 9, 2011.〕 This fish measures about 5 cm (2 in) in length. It is similar to its relative, the goldstripe darter (''Etheostoma parvipinne''), but with paler coloration.〔〔Bart, H. L. and M. S. Taylor. (1999). Systematic review of subgenus ''Fuscatelum'' of ''Etheostoma'' with description of a new species from the Upper Black Warrior river system, Alabama. ''Tulane Studies in Zoology and Botany'' 31 23-50.〕 The rush darter lives in clear, shallow waters where it shelters around the root masses of aquatic vegetation. It tolerates a variety of substrates, including sand, silt, and gravel. The fry develop in wetland pools. Little else is known about the fish's lifecycle.〔 This fish is currently known from three Alabama river drainages: the Clear Creek drainage in Winston County, some springs in Jefferson County, and Little Cove Creek drainage in Etowah County. Its total range is contained in 14.5 km of waterways.〔 This species is threatened by the degradation of its habitat from excessive sedimentation.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rush darter」の詳細全文を読む スポンサード リンク
|