Very elongate body. No cirri.
Upper body and top of head dark brown with a pale brown belly. Black stripes leading to bottom of head. Multiple close dark blotches form a broken line along the midflank.
Males: pale chainlink-like pattern on upper midflank. Chin yellow. Front of dorsal fin with white-bordered black ocellus.
Reaches 13.0 cm.
Found in worm tubes around reefs and on sandy bottoms.