Adults are beige to pink. A cave-dweller, this species lacks gills and is partly or completely blind. The head is rather wide and flat. The tail is long, rounded and finless. There are 16–19 grooves along the side. Eyes are small, reduced and covered or partially covered by a fusion of the eyelids. The eyes may appear sunken. Larvae have gills, functional eyes, broad tail fins and more pigment, being brown to dark gray, sometimes with spots or streaking on the sides and tail.