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Slackwater darter
The slackwater darter, (''Etheostoma boschungi'') is a small freshwater fish of the stippled darter group. The slackwater darter has a conspicuous dark subocular bar and three prominent saddles. It is rather drab in color, the dorsum being dusky, olivaceous, or brownish. The lateral blotches are dark brown to blue-black. The venter is slightly dusky and may have some orange and yellow pigments, which are more intense in males than in females. Maximum size is about 55 mm standard length.
== Reproduction ==
The reproductive behavior of the slackwater darter varies with the temperature of the breeding habitat and the amount of rainfall. Spawning has not been recorded in water less than 14°C. In addition, heavy rainfall must cause enough flooding to lift the darters into the breeding area.〔U.S. Fish and Wildlife Service. 1984. Recovery Plan for The Slackwater Darter (''Etheostoma boschungi''). Prepared by Herbert Boschung, University of Alabama for U.S. Fish and Wildlife Service, Atlanta Georgia. 45 pp.〕 Usually, adult darters begin their migration to the breeding area in mid-January. They reach the breeding habitat in February, and spawning occurs in March. By April, the darter progeny are developing, and leave the breeding area in May.〔Boschung, Herbert. 1976. An Evaluation Of The Slackwater Darter, ''Etheostoma boschungi'', Relative To Its Range, Critical Habitat, and Reproductive Habitat In The Cypress Creek Watershed And Adjacent Stream Systems. U.S.D.A. Soil Conservation Service, Auburn, Alabama. 5O pp.〕 Young darters double in size between April and June. Evidence suggests the slackwater darter is a short-lived species with a lifespan of only three years.
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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