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💧 Freshwater Critically Endangered 🌡️ Tropical

Raymond's grunter

Hephaestus raymondi Mees & Kailola, 1977
Max Length
25 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
33.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults inhabit clear, rainforest creeks over gravel and cobble bottoms . Eggs are guarded and fanned by the male parent .

Scientific Name
Hephaestus raymondi
Authority
Mees & Kailola, 1977
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Length
25 cm
Trophic Level
3.2
Resilience
Medium
Vulnerability
33.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 14; Anal spines: 3; Anal soft rays: 10 - 11.

🌀 Behaviour

Behavioural data for Raymond's grunter is currently being reviewed.

🦐 Diet

Diet information for Raymond's grunter is currently being compiled.

🥚 Reproduction

Eggs are guarded and fanned by the male parent .

🌍 Habitat & Distribution

Freshwater; demersal. Tropical; 8°S - 10°S known only from the Morehead River in Papua New Guinea.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.0123 × L3.04 (TL)
Max TL
25cm
Dorsal Spines
12
Dorsal Rays
14
Anal Spines
3
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
33.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Mees & Kailola, 1977

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