Enneapterygius olivaceus, Olive green triplefin

Enneapterygius olivaceus Dewa, Tashiro & Motomura, 2023

Olive green triplefin
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Blenniiformes (Blennies) > Tripterygiidae (Triplefin blennies) > Tripterygiinae
Etymology: Enneapterygius: Greek, ennea = nine times + Greek, pterygion = little fin (Ref. 45335); olivaceus: Name from Latin refers to the olivaceous body color of specimens; noun in apposition.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 0 - 3 m (Ref. 138615). Subtropical

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Pacific: southern Japan and the Philippines.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 2.5 cm SL male/unsexed; (Ref. 138615); 2.3 cm SL (female)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 14 - 16; Dorsal soft rays (total): 8 - 10; Anal spines: 1; Anal soft rays: 16 - 17. This species is distinguished by the following set of characters: second dorsal-fin spines 11-13 (modally 12); third dorsal-fin rays 8-10; A I,16-17; pectoral-fin rays i-v + 3-7 + vi-viii = 14-17; pored lateral-line scales 12-14; notched lateral-line scales 18-22; scale rows in longitudinal series 30-32; scales above 1st pored lateral-line scale 1-3; scales below 1st notched lateral-line scale 2 or 3; circumpeduncular scales 8; mandibular pore formula 3-4 + 1 + 3-4 (usually 3 + 1 + 3); head long, its length 28.4-33.0% (mean 31.4%) of SL; upper jaw long, its length 9.5-13.1% (11.4%) of SL; first spine of first dorsal fin longer than that of second dorsal-fin, its length 11.2-15.5% (13.6%) of SL; anterior nostril tentacle is unbranched; orbital tentacle large, leaf-shaped, the edge rounded, its length slightly less than or subequal to pupil diameter, its width almost half of its length; body generally olive-green, head, including eye, snout, lips, cheek, opercle, and pectoral-fin base dense black in nuptial males. Colouration: body generally yellowish-white, with scattered brownish-orange pigmentation particularly along the scale margins, darker on lateral surface forming indistinct A-shaped or X-shaped bars in pale males and females; pectoral-fin rays flecked with broad brown pigmentation forming ca. 4 or 5 vertical bands on fin; anal fin generally black, with translucent margin in nuptial males; grayish pigmentation on central region of anal-fin rays in pale males and females; caudal fin semi-transparent with white with grayish rays (Ref. 138615).
Body shape (shape guide): elongated; Cross section: oval.

Biology     Glossary (e.g. epibenthic)

This species is usually found in shallow rocky reefs in depths of 0.5–3 m. The specimen was collected from the upper surface of the rock covered by short seaweed (Ref. 138615).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Fricke, Ronald | Collaborators

Dewa, Y., S Tashiro and H. Motomura, 2023. A new species of the genus Enneapterygius (Perciformes: Tripterygiidae) from Japan and the Philippines, with a synopsis and synonymy of related species. Zootaxa 5374(3):333-360. (Ref. 138615)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

Not Evaluated 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00617 (0.00292 - 0.01304), b=3.03 (2.85 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.1   ±0.3 se; based on size and trophs of closest relatives
Resilience
(Ref. 120179) 		High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability
(Ref. 59153) 		Low vulnerability (10 of 100). 🛈