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🌊 Marine 🌡️ Subtropical

Rosy roughy

Hoplostethus roseus Su, Lin & Ho, 2022
Max Length
21.4 cm
Max Weight
Lifespan
Trophic Level
3.6
Depth
200–400 m
Climate
Subtropical
Resilience
Very low
Vulnerability
63.00/100
Typical Length
Depth Zone

📖 Overview

The mature female specimen (24.7 cm SL) with well-developed eggs and the male specimen (21.4 cm SL) with well-developed testes; females (19.5-20.9 cm SL) with mature eggs, suggests that this species is a small species, which reproduces at a length c. 20.0 cm SL .

Scientific Name
Hoplostethus roseus
Authority
Su, Lin & Ho, 2022
Habitat
Marine
Climate
Subtropical
Max Length
21.4 cm
Depth Range
200–400 m
Trophic Level
3.6
Resilience
Very low
Vulnerability
63.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 12 - 13; Anal spines: 3; Anal soft rays: 9 - 10; Vertebrae: 26. This species is distinguished from its congeners by the following set of characters: pyloric caeca 65-84; predorsal scales 18-22; pectoral-fin rays 14-17 (modally 15-16); total gill rakers on first-gill arch 18-19; HF1 2.2%-3.7% SL; HF2 5.1%- 6.0% SL; postorbital width 17.1%-20.6% SL. Colouration: oral cavity, branchial cavity, top and underside of tongue, and peritoneum are uniformly black; base of caudal fin brownish; spinous dorsal-fin membrane with black distal margin. .Cross section: oval.

🌀 Behaviour

Behavioural data for Rosy roughy is currently being reviewed.

🦐 Diet

Diet information for Rosy roughy is currently being compiled.

🥚 Reproduction

Reproduction data for Rosy roughy is currently being compiled.

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 200 - 400 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
3.6±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.0166 × L3.05 (TL)
Max TL
21.4cm
Dorsal Spines
7
Dorsal Rays
13
Anal Spines
3
Anal Rays
10
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
63.00/100
High vulnerability
Trophic Level
3.6
Predator
Climate Zone
Subtropical
Described By
Su, Lin & Ho, 2022

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