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🌊 Marine 🌡️ Subtropical

Black membranehead

Hymenocephalus fuscus McMillan & Iwamoto, 2014
Max Length
14.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
549–1202 m
Climate
Subtropical
Resilience
Medium
Vulnerability
31.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Black membranehead (Hymenocephalus fuscus) is a ray-finned fish of the family Macrouridae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 14.8 cm. It occurs at depths between 549 and 1202 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms.

Scientific Name
Hymenocephalus fuscus
Authority
McMillan & Iwamoto, 2014
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
Max Length
14.8 cm
Depth Range
549–1202 m
Trophic Level
3.3
Resilience
Medium
Vulnerability
31.00/100
Salinity
30–40 ppt

🐟 Physical Description

This species is distinguished by the following characters: pelvic fin rays 11-12; gill rakers first arch (outer/inner) 12-15/16-19; no or minute barbel; orbit diameter 20-33 % HL; body depth 70-85 % HL; suborbital width 23-28 % HL; snout length 25-33 % HL; upper jaw length 38-48 % H; colour of head and trunk of fresh specimens blackish, tail brownish peppered with melanophores; large, oval, deciduous scales on body and tail .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Black membranehead 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 549 - 1202 m . Subtropical Southwest Pacific: Wanganella Bank, West Norfolk Ridge, off northeast and north coasts of North Island, and northwest Challenger Plateau.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00219 × L3.2 (TL)
Max TL
14.8cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
31.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
McMillan & Iwamoto, 2014

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