Sculpins, as a group, have flattened bodies, large mouths and enlarged pectoral fins. They have large heads that taper abruptly into the rather slender body. They lack scales. The grotto sculpins of Perry County look much like the regular banded sculpin, but they have smaller eyes, paler bodies, and other features fitting them for cave life. The overall color is light tan to bleached tan, with underparts unpigmented.