Recovery Plan for the Rare Aquatic Species of the Muddy River Ecosystem.

摘要

The Moapa dace (Moapa coriacea) was listed as endangered on March 11, 1967 (32 Federal Register 4001). It occupies approximately 9.5 kilometers (6 miles) of stream habitat in five thermal headwater spring systems and the main stem of the upper Muddy (= Moapa) River, Clark County, Nevada. Critical habitat has not been designated. A range-wide survey documented 3,841 adult Moapa dace in August 1994. The Muddy River ecosystem is also inhabited by seven aquatic species of special concern (three fish, two snails, and two insects).