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🌊 Marine Least Concern 🌡️ Subtropical

Pacific doubleline clingfish

Rhinolepadichthys geminus Fujiwara & Motomura, 2021
Max Length
2.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
8–25 m
Climate
Subtropical
Resilience
High
Vulnerability
22.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

This species is usually commensal with crinoids, rarely associated with rocky substrate near sea urchins .

Scientific Name
Rhinolepadichthys geminus
Authority
Fujiwara & Motomura, 2021
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
2.7 cm
Depth Range
8–25 m
Trophic Level
3.3
Resilience
High
Vulnerability
22.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Rhinolepadichthys
Rhinolepadichthys
Species
Pacific doubleline clingfish
Rhinolepadichthys geminus

🐟 Physical Description

Dorsal soft rays (total): 10 - 11; Anal soft rays: 9 - 10. This species is distinguished by the following characters: body slender, its depth 12.7-16.1 (mean 14.4) % SL; adhesive disc is circular, its length 15.0-18.7 (16.8) and with 12.9-15.9 (14.4) % SL, ratio of length to width 1.03-1.25; anus posteriorly positioned, pre-anus length and disc to anus length 66.7-72.0 (68.9) and 25.7-31.6 (28.9) % SL, respectively; snout tip directed upward, usually horizontally level with lower margin of eye lens (lateral view); abdomen with a yellow stripe on either side of ventral midline; dorsal and lateral surfaces of body with yellow dots (sometimes indistinct and lateral dots absent), forming c. three to five longitudinal rows and a single broken line, respectively .Cross section: oval.

🌀 Behaviour

Behavioural data for Pacific doubleline clingfish 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; reef-associated; depth range 8 - 25 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
2.7cm
Dorsal Rays
11
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Subtropical
Described By
Fujiwara & Motomura, 2021

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