A very slender species, with both head and body on the same plane. Snout very slender, about one-eighth of the total length, with small upturned terminal mouth. Eyes round and relatively long. Single posterior dorsal fin, with 20-26 rays; small anal fin with four rays. Body has 15-17 bony rings, and tail has 18-22 bony rings. Caudal fin is round when expanded. Coloration composed of alternating black to reddish and yellow bars; caudal fin is white with a red circle. Reaches some 7.1 in (18 cm) in length.
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