Head Pores - Head canal system with pores B',C,D,F,H'; preopercle with pores M',N'
Scales - No scales present
Fins - D1 - VII, First spine prolonged in both sexes,longer in males, reaching the base of the first dorsal ray; D2 - 11(10-11); pectoral - 18(17-19); anal - 10(9-10)
Head - Maxilla reaching to middle of eye; anterior nostril a tube; posterior nostril a raised rim;
Papillae - A transverse pattern with three rows anterior to row b; row 5i/6i at the anterior of row b and attached to it; no vertical rows extend below the level of row d
Color - Bussing 1990: Body of alcohol preserved specimens with ten
dark crossbars dorsally that are wider than pale interspaces, counded
from base of pectoral fin to base of caudal fin. Several bars on vertical
half of body bifurcated or disjoined into half-bars; ventral bars straw-colored
and narrower than similar straw-colored interspaces, these bars have dark
margins and a few irregularly dispersed melanophores. Five internal pigment
blotches on lower sides; each diffuse blotch corresponding to a pair of
dorsal bars; most evident in smaller specimens by transmitted light. Holotype
with 14 vertical bars on left side, 12 bars on right side; 10 paratypes
with 10-14 ventral bars.
Distribution - Known only from Isla del Coco and Isla Galapagos