This species was last seen in 1948 and is believed to have gone extinct in the early 1950s, likely as a result of habitat alteration and competition with and predation by introduced crayfish Procambarus clarkii, mosquitofish (Gambusia affinis), black mollies (Poecilia sphenops), and bullfrogs (Rana catesbiana).
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The Ash Meadows killifish (Empetrichthys merriami) was first documented by C. H. Gilbert (1893) and historically occupied numerous springs near Ash Meadows, Nye County, Nevada.
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