Okaloosa darter

The Okaloosa darter is a small, elongate, slightly compressed darter, with adults ranging in size from 27-49 millimeters standard length. Its preferred habitat is in the margins of clear flowing streams among the vegetation and woody debris. The darter’s diet consists mostly of immature aquatic insect larvae, primarily midges, mayflies and caddisflies. It is only found in six stream systems located in the lower portions of Okaloosa and Walton counties in northwest Florida. Its entire range totals only 242.8 stream miles. Listed as ENDANGERED in 1973 (population 1,500) Downlisted to THREATENED with an estimated population of more than 600,000 in 2010