as critically imperiled in several states. Hybridization between E. chlorobranchium, E. camurum, and E. rufilineatum does not appear to be a threat to the species. Additionally, climate change may force the greenfin into higher elevations, and into smaller streams. This will almost certainly lead to population declines. Because of its position as an important food source for larger fish in the Tennessee River drainage area, it is important for this species to be assessed and monitored in the future. References External links Bio.utk.edu Etheostoma Fish described in 1972