Adults are found among rocky boulders and in surge channels to a depth of about 6 m . 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): 16 - 18; Dorsal soft rays (total): 11; Anal spines: 1; Anal soft rays: 19 - 20; Vertebrae: 37. Distinguished by the following characters: 5-8 symphyseal mandibular sensory pores; second dorsal fin spines XIII-XIV; last pleural ribs on vertebral centrum 11, vertebrae 11+ 26 = 37; nape naked ; black lower half of head; bright blue stripe extending from anterior part of upper lip to preopercular margin through ventral margin of orbit; dorsal fins black distally; central part of pectoral fin base black; entire caudal fin black . : elongated.
Behavioural data for Darktail triplefin is currently being reviewed.
Marine; demersal; depth range 0 - 6 m . Tropical Central Pacific: Japan, Philippines and Guam.
| Language | Common Names |
|---|---|
| 🇬🇧English | Blacktail Triplefin · Darktail Triplefin |
| 🇯🇵Japanese | Momijihebigimpo · モミジヘビギンポ |
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .
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