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🌊 Marine Least Concern 🌡️ Temperate

Urchin clingfish

Dellichthys morelandi Briggs, 1955
Max Length
8.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
0–15 m
Climate
Temperate
Resilience
Medium
Vulnerability
34.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Occurs in rock pools and the subtidal zone. Usually found beneath the spines of sea urchins. Individuals too large to be associated with sea urchins usually found beneath rocks or among shell debris. Feeds mainly on the tube feet and pedicellariae of its host sea urchins, Evechinus chloroticus and on small crustaceans.

Scientific Name
Dellichthys morelandi
Authority
Briggs, 1955
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
IUCN Status
LC
Max Length
8.5 cm
Depth Range
0–15 m
Trophic Level
3
Resilience
Medium
Vulnerability
34.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Dellichthys
Dellichthys
Species
Urchin clingfish
Dellichthys morelandi

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 8 - 9; Anal spines: 0; Anal soft rays: 8 - 9. Head and body purple or cream with blue spots. A band of pale color across nape. Distinguished from other clingfishes by its thin lips, exposed flap of skin across the snout and a small fleshy swelling at the base of the pectoral fin.: elongated.

🌀 Behaviour

Behavioural data for Urchin clingfish 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 - 15 m . Temperate Southwest Pacific: endemic to New Zealand.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3±0.1
Food Items

the tube feet and pedicellariae of its host sea urchins, Evechinus chloroticus (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.00457 × L3.12 (TL)
Max TL
8.5cm
Dorsal Rays
9
Anal Rays
9

🌡️ 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
34.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Briggs, 1955

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