Adults occur in tide pools; in shallow water on beach rock, brown algae and coralline algae. Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites . Larvae are planktonic which occur primarily in shallow, nearshore waters .
Dorsal spines (total): 14; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 17. This species is distinguished by the following characters: D2 10-13 (modally 11); pored lateral-line scales 11-15; notched lateral-line scales 17-22; scales below the first notched lateral-line scale 2-4 (modally 3); head short, its length 24.7-32.4% of SL; upper jaw short, its length 7.4-11.0% of SL; long and slightly rounded orbital tentacle (its length 76.5% of pupil diameter); double symphyseal mandibular pores (mandibular pore formula 3 + 2 + 3); black area in nuptial males is restricted to the lower half of the head .: elongated; Cross section: oval.
Behavioural data for Minute triplefin is currently being reviewed.
Marine; reef-associated. Tropical West Pacific; Philippines.
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