🌊 Marine
Least Concern
🌡️ Temperate
Graham's gudgeon
Grahamichthys radiatus Valenciennes, 1837
📖 Overview
Occurs in rock pools and subtidal areas down to 50 m. Found in areas of sand or mud, associated with rocks, shells, or other partially buried objects.
Scientific Name
Grahamichthys radiatus
Authority
Valenciennes, 1837
Habitat
Marine
Climate
Temperate
IUCN Status
LC
Max Length
6.5 cm
Depth Range
0–50 m
Trophic Level
3.3
Vulnerability
10.00/100
Salinity
30–40 ppt
🔬 Taxonomy
Genus
Grahamichthys
Grahamichthys
Species
Graham's gudgeon
Grahamichthys radiatus
🐟 Physical Description
Physical description for Graham's gudgeon is currently being compiled.
🌀 Behaviour
Behavioural data for Graham's gudgeon is currently being reviewed.
🦐 Diet
aquatic invertebrates
small fish
algae
detritus
🥚 Reproduction
🐣 Oviparous
📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External
🌍 Habitat & Distribution
Marine; demersal; depth range 0 - 50 m . Temperate Southwest Pacific: endemic to New Zealand.
🌿 Ecology
Zone Preferences
🌊 Marine
⬇️ Benthic
Trophic Level
3.3±0.4
📐 Morphometrics
Length–Weight Relationship:
W = 0.00389 × L3.12
(TL)
Max TL
6.5cm
🌡️ Water Parameters & Tolerance
Salinity Range
30–40ppt
🛡️ Conservation Assessment
IUCN Category
Least Concern
Assessment Date
2024
📊 Population Risk & Fisheries
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Temperate
Described By
Valenciennes, 1837
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