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🌊 Marine 🌡️ Subtropical

Olive green triplefin

Enneapterygius olivaceus Dewa, Tashiro & Motomura, 2023
Max Length
2.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
0–3 m
Climate
Subtropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

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 .

Scientific Name
Enneapterygius olivaceus
Authority
Dewa, Tashiro & Motomura, 2023
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
Max Length
2.5 cm
Depth Range
0–3 m
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

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 .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Olive green triplefin is currently being reviewed.

🦐 Diet

Diet information for Olive green triplefin is currently being compiled.

🥚 Reproduction

Reproduction data for Olive green triplefin is currently being compiled.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 0 - 3 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00617 × L3.03 (TL)
Max TL
2.5cm
Dorsal Spines
15
Dorsal Rays
9
Anal Spines
1
Anal Rays
17

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Dewa, Tashiro & Motomura, 2023

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