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The shadow bass (''Ambloplites ariommus'') is a species of freshwater fish in the sunfish family (Centrarchidae) of order Perciformes. It is native to Mississippi, Missouri, Arkansas, Louisiana, and Georgia. ''A. ariommus'' reaches a maximum recorded overall length of 30 cm (12 in) and a maximum recorded weight of 820 g (1.8 lb). The shadow bass is a member of the centrarchids or sunfish family and is closely related to the rock bass ''Ambloplites rupestris'' along with one more related species occurring naturally. 〔(Johnson ''et al.'' 2003).〕 The shadow bass is native to the southeastern United States and is most common in Florida, Georgia, Louisiana, Mississippi, Alabama, and two isolated populations in Arkansas and Missouri. It inhabits small to medium-sized rivers and streams with permanent water flow in cool water temperatures similar to smallmouth bass ''Microtperus dolomieu'' habitat. Management of the shadow bass was not conducted till the 1980s and still much management being done on shadow bass since most individuals value them below smallmouth bass, but with protection of pools and riffles with vegetated or bushy cover with substrates of gravel, mud, and sand. 〔(Roell ''et al.'' 2010).〕 ==Geographic distribution== The shadow bass' native range includes the southeastern United States from the Apalchicola River drainage in Georgia to the lower Mississippi basin in Louisiana. The two isolated populations in the St. Francis, Black Arkansas Red, and upper Ouachita River drainages in Missouri and Arkansas in the Ozark regions.〔(Roe ''et al.'' 2008).〕 In Tennessee, the shadow bass can be found in most drainages south of the Tennessee River. Other river drainages that shadow bass inhabit are Blackwater and Chattahoochee Rivers in southern Georgia and northern Florida. The apparent absence of shadow bass in Black Belt streams is probably the result of low stream flow and poor water-quality conditions during the late summer when temperatures are high. Channelization is a possible factor in the distribution of the shadow bass in Mississippi River systems, but Mareska ''et al.'' 2000. proved no difference in the distribution of shadow bass. 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「Shadow bass」の詳細全文を読む スポンサード リンク
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