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💧 Freshwater Endangered 🌡️ Tropical

Kutubu hardyhead

Craterocephalus lacustris Trewavas, 1940
Max Length
14 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
29.00/100
Typical Length
-
Depth Zone
-

📖 Overview

An extremely abundant species which forms schools along shallow margins of the lake in both open water or amongst aquatic vegetation.

Scientific Name
Craterocephalus lacustris
Authority
Trewavas, 1940
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
EN
Max Length
14 cm
Trophic Level
3
Resilience
Medium
Vulnerability
29.00/100
Water Temp
22–24 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 6 - 9; Dorsal soft rays (total): 7 - 9; Anal spines: 1; Anal soft rays: 8 - 10. : elongated.

🌀 Behaviour

Behavioural data for Kutubu hardyhead is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 7.0 - 8.0; dH range: ? - 15. Tropical; 22°C - 24°C ; 6°S - 7°S known only from Lake Kutubu and its outlet stream, the Soro River, Papua New Guinea.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.4
🐠 Schooling

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
14cm
Dorsal Spines
8
Dorsal Rays
8
Anal Spines
1
Anal Rays
9

🌡️ Water Parameters & Tolerance

Temperature Range
22–24°C
pH Range
7–8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Trewavas, 1940

👥 Community & Contribute

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