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🌊 Marine Least Concern 🌡️ Tropical

Darktail triplefin

Helcogramma aquila Williams & McCormick, 1990
Max Length
4.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
0–6 m
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

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 .

Scientific Name
Helcogramma aquila
Authority
Williams & McCormick, 1990
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
4.1 cm
Depth Range
0–6 m
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

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.

🌀 Behaviour

Behavioural data for Darktail 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 - 6 m . Tropical Central Pacific: Japan, Philippines and Guam.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00617 × L3.03 (TL)
Max TL
4.1cm
Dorsal Spines
17
Dorsal Rays
11
Anal Spines
1
Anal Rays
20
Vertebrae
37

🌡️ 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
Williams & McCormick, 1990

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Blacktail Triplefin · Darktail Triplefin
🇯🇵Japanese Momijihebigimpo · モミジヘビギンポ

🗺️ 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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