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💧 Freshwater Endangered 🌡️ Tropical

Guinea swamp eel

Ophisternon afrum Boulenger, 1909
Max Length
53.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
46.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Overview information for Guinea swamp eel is currently being compiled by our editorial team.

Scientific Name
Ophisternon afrum
Authority
Boulenger, 1909
Habitat
Freshwater
Climate
Tropical
IUCN Status
EN
Max Length
53.5 cm
Trophic Level
3.2
Resilience
Medium
Vulnerability
46.00/100

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Diagnosis: body naked, elongated, cylindrical in front and strongly compressed back; caudal part of body making less than one third of the total length and ending in a blunt point; no paired fins; dorsal and anal fins reduced to a skin fold, rayless, meeting the caudal fin; eyes small, overlaid with skin, situated at the head forward; mouth large with well developed lips; conical teeth to the jaws and the palate; gill opening reduced to a medio-ventral transversal slit; branchiostegal membrane free from isthmus; 4 branchial arches with well developed branchiae; lateral line present; vertebral count: 80 abdominal and 50 caudal . Colouration: adults are dark-coloured, nearly black, juveniles are clearer .: eel-like.

🌀 Behaviour

Behavioural data for Guinea swamp eel is currently being reviewed.

🦐 Diet

Diet information for Guinea swamp eel is currently being compiled.

🥚 Reproduction

Reproduction data for Guinea swamp eel is currently being compiled.

🌍 Habitat & Distribution

Freshwater; brackish; demersal. Tropical; 17°N - 3°N recorded from Niger delta, Nigeria (Ref.

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish ⬇️ Benthic
Trophic Level
3.2±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00085 × L3.09 (TL)
Max TL
53.5cm

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
46.00/100
Moderate-High vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Boulenger, 1909

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Muraena cierea Bonnaterre ex Gronow 1788 Synonym
Symbranchus afer Boulenger 1909 Synonym
Synbranchus afer Boulenger 1909 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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