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Menidia audens
Image courtesy of Dave (Gio) Giodano, Califonia Department of Fish and Wildlife
Menidia audens
Taxonomic Group: Fishes


Mississippi Silversides, Menidia audens (Hay 1822) are small silvery freshwater fish with forked tails and a silvery band on the side and their lateral line. They are native to the Mississippi and Gulf basins from Louisiana-Texas to southern Illinois and westward to Arkansas and Oklahoma. On the West Coast they have been introduced to reservoirs in California. On the East Coast they are introduced to the Tennessee and Cumberland Rivers in Alabama, Tennessee, and Kentucky. Several impacts have been reported from these introductions. In California they have contributed to the extinction of the endemic Clear Lake Splittail (Pogonichthys ciscoides) and are competitors and predators on the endangered Delta Smelt (Hypomesus transpacifius). On the East Coast they have contributed to the decline of the native Brook Silverside (Labidesthes sicculus).

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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