This species appears to be a rare species, with seven specimens collected mostly between 10-16 m. Found living under large pieces of dead foliose coral rubble on a sandy bottom subject to moderate currents and wave action. It is apparently a solitary species, only a single specimen collected from each piece of rubble examined .
Dorsal spines (total): 7; Dorsal soft rays (total): 8; Anal spines: 1; Anal soft rays: 8. This species is distinguished by the following characters: scales in the predorsal midline; no scales on the cheek or opercle; elongated second spine of the first dorsal fin reaching to the bases of the 2nd-8th second dorsal-fin rays when adpressed; unbranched pectoral-fin rays; fifth pelvic-fin ray branched with a full basal membrane; when fresh, yellow bars on the head and vertically elongate yellow spots on brown body .: elongated; Cross section: oval.
Behavioural data for Wangunu's pygmygoby is currently being reviewed.
Marine; reef-associated; depth range 8 - 50 m , usually 10 - 16 m . Tropical Central Pacific: Papua New Guinea, Timor Leste and Philippines.
The following diseases are known to affect Wangunu's pygmygoby.
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