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Redspotted sunfish
The redspotted sunfish (''Lepomis miniatus'') is a species of freshwater demersal fish native to the United States.
==Geographic distribution==
The redspotted sunfish is a freshwater fish that can be found throughout the Mississippi River Valley. The distribution spreads north into Illinois and to the Ohio river, west into Texas and to Oklahoma's Red River, and east to the Chattahoochee River in Georgia.〔Williams, C.H. and T.H. Bonner. ''Lepomis miniatus''. Texas Freshwater Fishes. Texas State University - San Marcos. n.d. Web. Retrieved 11 November 2012. http://www.bio.txstate.edu/~tbonner/txfishes/lepomis%20miniatus.htm 〕 Currently the populations of ''Lepomis miniatus'' found in the southern United States seem to be stable. 〔 However, the species numbers have diminished significantly in the state of Illinois which lies at the northernmost point of the fish's historic range. Once the redspotted sunfish was found in bodies of water throughout the state but the species range is now limited to just a few counties in the southern portion of Illinois.〔Nyboer, R.W., J.R. Herkert, and J.E. Ebinger. Endangered and Threatened Species of Illinois: Status and Distribution, Vol 2: Animals. Illinois Endangered Species Protection Board. p. 75. 2004 Web. Retrieved 11 November 2012. http://dnr.state.il.us/ORC/WildlifeResources/theplan/PDFs/2%20From%20Threatened%20&%20Endangered%20Species%20of%20Illinois.pdf〕 In fact surveys conducted in the mid-2000s suggested that just two populations existed in the entire state at the time.〔The Redspotted Sunfish Saga: From Statewide Surveys to Genetic Analyses, Captive Propagation, and Reintroduction Efforts. n.d. Web. Retrieved 11 November 2012. http://www.midwestfw.org/documents/FisheriesAbstracts.pdf 〕 There could be a number of causes for the decrease in the ''Lepomis miniatus'' in Illinois. A popular theory is that the redspotted sunfish has struggled due to a loss of wetlands, which make up the sunfish's natural habitat. The population may also be declining due to increasingly poor water conditions or from competition with invasive species.〔Great Rivers: Restoring Wetlands Gives Fish a Fighting Chance. The Nature Conservancy. 07 March 2011 Web. Retrieved 11 November 2012. http://www.nature.org/ourinitiatives/habitats/riverslakes/howwework/restoring-wetlands-gives-fish-a-fighting-chance.xml 〕
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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