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🌊 Marine Least Concern 🌡️ Tropical

Blacktail triplefin

Enneapterygius nigricauda Fricke, 1997
Max Length
2.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
0–11 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults are found on seaward and lagoon reefs, usually less than 5 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 . Minimum depth from Ref. 58018.

Scientific Name
Enneapterygius nigricauda
Authority
Fricke, 1997
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
2.9 cm
Depth Range
0–11 m
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 14 - 17; Dorsal soft rays (total): 7 - 10; Anal spines: 1; Anal soft rays: 16 - 19. Male red with darker red, double red bars , black "mask" covering front and lower two-thirds of head, chest, and pectoral-fin base, narrow white bar at caudal-fin base, and basal two-thirds to three-fourths of caudal-fin black. Female translucent greenish grey with indistinct reddish blotches along back, middle of sides, and just above anal-fin base. Head, chest, and pectoral-fin base scaleless; short orbital tentacle present; mandibular pores 3-4 + 1 + 3-4. Maximum size to 3.5 cm TL .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Blacktail triplefin is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; demersal; depth range 0 - 11 m . Tropical Central Pacific: Taiwan, Philippines, Vanuatu, Tonga, American Samoa, Society Islands, Kiribati, Jarvis Island, Howland Island, Wake Island, Marshall Islands, Micronesia, Guam, and Boni Islands (Japan).

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00617 × L3.03 (TL)
Max TL
2.9cm
Dorsal Spines
16
Dorsal Rays
9
Anal Spines
1
Anal Rays
18

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 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
Tropical
Described By
Fricke, 1997

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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