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🌊 Marine Least Concern 🌡️ Temperate

Slender clingfish

Gastrocyathus gracilis Briggs, 1955
Max Length
4.5 cm
Max Weight
-
Lifespan
4 yrs
Trophic Level
3
Depth
0–7 m
Climate
Temperate
Resilience
Medium
Vulnerability
25.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Found amongst weed at low tide, and on brown algae in the subtidal zone. Appears to be restricted to algal species with strap-like fronds. Feeds mainly on harpacticoid copepods.

Scientific Name
Gastrocyathus gracilis
Authority
Briggs, 1955
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
IUCN Status
LC
Max Length
4.5 cm
Lifespan
4 years
Depth Range
0–7 m
Trophic Level
3
Resilience
Medium
Vulnerability
25.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Gastrocyathus
Gastrocyathus
Species
Slender clingfish
Gastrocyathus gracilis

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 5 - 6; Anal spines: 0; Anal soft rays: 5 - 7. Uniform red brown to yellowish with variable narrow bands along the head, level with the eye on the dorsal surface of the body, often breaking up into spots on the sides. Fins transparent. Distinguished from other clingfishes by its small size with a slender body tapering behind the head and the pointed fleshy tip on the upper jaw that overhangs the lower jaw.: elongated.

🌀 Behaviour

Behavioural data for Slender clingfish is currently being reviewed.

🦐 Diet

Diet information for Slender clingfish is currently being compiled.

🥚 Reproduction

Reproduction data for Slender clingfish is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal; depth range 0 - 7 m . Temperate Southwest Pacific: endemic to New Zealand.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3
Food Items

harpacticoid copepods

📐 Morphometrics

Length–Weight Relationship: W = 0.00398 × L3.13 (TL)
Max TL
4.5cm
Dorsal Rays
6
Anal Rays
6

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Briggs, 1955

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