Northern cavefish

Description

The northern cavefish or northern blindfish,Amblyopsis spelaea,is found in caves through Kentucky and southern Indiana.It is listed as a threatened species in the United States and the IUCN lists the species as near threatened. During a 2013 study of Amblyopsis spelaea,scientists found that the species was divided into two distinct evolutionary lineages: one north of the Ohio River,in Indiana,and one south of the river,in Kentucky.The southern population retained the name A.spelaea and the northern was re-designated Amblyopsis hoosieri in a 2014 paper published in the journal ZooKeys.Neither species is found north of the White River,flowing east to west south of Bedford,Indiana.