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🌊 Marine Least Concern 🌡️ Subtropical

Brown rat clingfish

Barryichthys hutchinsi Conway, Moore & Summers, 2019
Max Length
1.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
0–1 m
Climate
Subtropical
Resilience
High
Vulnerability
14.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

This species was collected from dense mats of macroalgae attached to rocky substrate in water up to 1 meter depth. A female specimen (1.42 cm SL) contained ca. 20 mature eggs (ca. 10 within each ovary) of ca. 0.3-0.@ mm diameter. The largest eggs in each ovary exhibited a dark orange cap that may represent an 'attachment apparatus' at the animal pole as described from the eggs of three species of European gobiesocid .

Scientific Name
Barryichthys hutchinsi
Authority
Conway, Moore & Summers, 2019
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
IUCN Status
LC
Max Length
1.5 cm
Depth Range
0–1 m
Trophic Level
3
Resilience
High
Vulnerability
14.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Barryichthys
Barryichthys
Species
Brown rat clingfish
Barryichthys hutchinsi

🐟 Physical Description

Dorsal soft rays (total): 4 - 5; Anal soft rays: 4 - 6; Vertebrae: 38 - 39. This species is distinguished from Barryichthys algicolaby having a shorter, deeper body (body depth at dorsal-fin origin 10-11% SL vs. 7-8% SL); wider, deeper head (head width at widest point 66-75% HL vs. 55-61%; depth at orbit 30-32% HL vs. 27-29%; interorbital width 27-33% HL vs. 20-24%); the ventral margin of orbit obscured by cheek in ventral view (vs. entire ventral margin of orbit visible in ventral view); shorter abdominal region with fewer vertebrae (17 vs. 21); with fewer ribs (11-12 vs. 15), epicentrals (14-15 vs. 18-19) and total vertebrae ( 38-39 vs. 42-44). Live colour pattern, including body background golden-yellow to olive-brown, a variable number of irregularly shaped light to dark brown markings along dorsal midline, presence of a series of light to dark brown elongate lateral markings forming an incomplete or complete horizontal stripe .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Brown rat 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; reef-associated; depth range 0 - 1 m . Subtropical South Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
1.5cm
Dorsal Rays
5
Anal Rays
5
Vertebrae
39

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Conway, Moore & Summers, 2019

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