Inhabits steep outer reef walls, often present in groups of up to 20 individuals which are loosely aggregated and perched vertically on the substrate at the back of small overhangs and crevices. Non-type specimens collected were also nearly always found on steep outer reef walls .
Dorsal spines (total): 7; Dorsal soft rays (total): 8 - 9; Anal spines: 1; Anal soft rays: 8. This species is distinguished by the following characters: first dorsal fin with a large (slightly greater than pupil diameter in width) round, black, ocellated spot in between spines 1 and 5; a second, much smaller black or dark red spot just posterior to the spine of the second dorsal fin and above the basal stripe; body yellow with a dark purplish or gray head with two distinct red bars across the cheek; without round spots of any colour on the nape, opercle or cheek; upper pectoral fin base with a small dark (preserved) or white (alive) spot; a narrow bony interorbital (
Behavioural data for Three-eyed pygmygoby is currently being reviewed.
Marine; reef-associated; depth range 5 - 71 m . Tropical; 20°N - 9°S, 114°E - 154°E known with certainty from Indonesia.
The following diseases are known to affect Three-eyed pygmygoby.
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