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💧 Freshwater Near Threatened 🌡️ Tropical

Drysdale hardyhead

Craterocephalus helenae Ivantsoff, Crowley & Allen, 1987
Max Length
8 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
26.00/100
Typical Length
5.5 cm
Depth Zone
-

📖 Overview

Found in rocky pools in clear, flowing streams. Occurs in still or flowing water of sandy river channels and rocky pools . Feeds chiefly on insects and their aquatic larvae and crustaceans, but some algae is also consumed.

Scientific Name
Craterocephalus helenae
Authority
Ivantsoff, Crowley & Allen, 1987
Habitat
Freshwater
Climate
Tropical
IUCN Status
NT
Max Length
8 cm
Trophic Level
3
Resilience
High
Vulnerability
26.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Drysdale hardyhead is currently being compiled.

🌀 Behaviour

Behavioural data for Drysdale 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. Tropical; 15°S - 16°S known only from the Drysdale River in the northern Kimberley region, Western Australia.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.37

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
8cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
26.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Described By
Ivantsoff, Crowley & Allen, 1987

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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