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🌊 Marine Critically Endangered 🌡️ Subtropical

Eightgill hagfish

Eptatretus octatrema Barnard, 1923
Max Length
30 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
46–73 m
Climate
Subtropical
Resilience
Low
Vulnerability
29.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Overview information for Eightgill hagfish is currently being compiled by our editorial team.

Scientific Name
Eptatretus octatrema
Authority
Barnard, 1923
Habitat
Marine
Climate
Subtropical
IUCN Status
CR
Max Length
30 cm
Depth Range
46–73 m
Trophic Level
4
Resilience
Low
Vulnerability
29.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🐟 Physical Description

: eel-like.

🌀 Behaviour

Behavioural data for Eightgill hagfish is currently being reviewed.

🦐 Diet

Diet information for Eightgill hagfish is currently being compiled.

🥚 Reproduction

Copulatory organ absent. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies .

🌍 Habitat & Distribution

Marine; demersal; non-migratory; depth range 46 - 73 m . Subtropical; 35°S - Southeast Atlantic: known from the holotype taken from the Agulhas Bank, South Africa.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Migration
Non-migratory
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00204 × L2.93 (TL)
Max TL
30cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Climate Zone
Subtropical
Described By
Barnard, 1923

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