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🌊 Marine Least Concern 🌡️ Deep-water

Barrel-eye

Opisthoproctus soleatus Vaillant, 1888
Max Length
10.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
300–800 m
Climate
Deep-water
Resilience
High
Vulnerability
26.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Mesopelagic . Probably not exhibiting vertical migration . The limits of its distribution coincide with the 400m-isotherm for 8°C .

Scientific Name
Opisthoproctus soleatus
Authority
Vaillant, 1888
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
10.5 cm
Depth Range
300–800 m
Trophic Level
3.6
Resilience
High
Vulnerability
26.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 11 - 13; Anal spines: 0. Sides of body dark; head below and behind eye sprinkled with large melanophores; snout translucent ventrally, transparent dorsally . Anal fin either with 2-3 rudimentary rays or not visible externally .

🌀 Behaviour

Behavioural data for Barrel-eye 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; bathypelagic; depth range 300 - 800 m , usually 500 - 700 m . Deep-water; 51°N - South China Sea (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.6±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.02239 × L2.99 (TL)
Max TL
10.5cm
Dorsal Rays
12

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2012

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
26.00/100
Low vulnerability
Trophic Level
3.6
Predator
Climate Zone
Deep-water
Described By
Vaillant, 1888

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