Adults are found in high altitude (200-400 m elevation) fast-flowing mountain streams with gravel or rock substrates. Eggs are guarded and fanned by the male parent .
Dorsal spines (total): 12; Dorsal soft rays (total): 10 - 11; Anal spines: 3; Anal soft rays: 9 - 10.
Behavioural data for Hephaestus Obtusifrons is currently being reviewed.
Eggs are guarded and fanned by the male parent .
Freshwater; benthopelagic. Tropical; 2°S - 4°S known only from the Bewani Mountains in the headwaters of the Pual (or Nemayer) River system, Papua New Guinea and the upper Sermowai River, Irian Jaya, Indonesia.
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