💧 Freshwater
Least Concern
🌡️ Tropical
Mountain hardyhead
Craterocephalus nouhuysi Weber, 1910
📖 Overview
Inhabits relatively fast-flowing streams, usually forming schools in rocky pools or quiet backwaters.
Scientific Name
Craterocephalus nouhuysi
Authority
Weber, 1910
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
10 cm
Trophic Level
3
Resilience
High
Vulnerability
30.00/100
Water Temp
22–24 °C
Salinity
0–0.5 ppt
🔬 Taxonomy
Class
Teleostei
Teleostei
Order
Atheriniformes
Atheriniformes
Family
Atherinidae
Atherinidae
Genus
Craterocephalus
Craterocephalus
Species
Mountain hardyhead
Craterocephalus nouhuysi
🐟 Physical Description
Dorsal spines (total): 7 - 9; Dorsal soft rays (total): 8 - 10; Anal spines: 1; Anal soft rays: 9 - 10. : elongated.
🌀 Behaviour
Behavioural data for Mountain 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 - 7.8; dH range: 8 - 18. Tropical; 22°C - 24°C ; 4°S - 8°S
🌿 Ecology
Zone Preferences
💧 Freshwater
Trophic Level
3±0.4
🐠 Schooling
📐 Morphometrics
Length–Weight Relationship:
W = 0.00389 × L3.12
(TL)
Max TL
10cm
Dorsal Spines
8
Dorsal Rays
9
Anal Spines
1
Anal Rays
10
🌡️ Water Parameters & Tolerance
Temperature Range
22–24°C
pH Range
7–7.8
Salinity Range
0–0.5ppt
🛡️ Conservation Assessment
IUCN Category
Least Concern
Assessment Date
2019
📊 Population Risk & Fisheries
Population Resilience
High
Minimum doubling time
Fishing Vulnerability
30.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Weber, 1910
🔍 Similar Species
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