Ecological Risk Screening Summary - Scarlet Shiner (Lythrurus fasciolaris) - Uncertain Risk

Lythrurus fasciolaris, Scarlet Shiner, is a fish native to the Ohio River basin, from Ohio to southeast Illinois, the Tennessee River drainage in Georgia, Alabama, and Mississippi. It may be either native or introduced in the Muskingum River drainage in Ohio and the Black Warrior system in Alabama. L. fasciolaris can be found in rocky pools, creeks, small rivers, and headwaters with gravel bottoms. They nest near Lepomis and Nocomis spp. with their spawning season typically from May to August. L. fasciolaris hybridizes with the redfin shiner, Lythrurus umbratilis. No State regulations were found for this species. Because of the uncertainty around whether certain populations are introduced or native, the History of Invasiveness for Lythrurus fasciolaris is classified as No Known Nonnative Population. The climate matching analysis for the contiguous United States indicates establishment concern for this species outside its native range. The highest climate match could be found in the eastern United States and around the Great Lakes from Maine to Louisiana including where this species is native or currently established. The Certainty of Assessment for this ERSS is classified as Low due to the uncertainty in understanding the species’ range and the lack of information on impacts from introductions. The Overall Risk Assessment Category for Lythrurus fasciolaris in the contiguous United States is Uncertain.