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🌿 Brackish Least Concern 🌡️ Tropical

Estuary clingfish

Trachelochismus aestuarium Conway, Stewart & King, 2017
Max Length
4.3 cm
Max Weight
Lifespan
Trophic Level
3.1
Depth
0–29 m
Climate
Tropical
Resilience
High
Vulnerability
30.00/100
Typical Length
Depth Zone
demersal

📖 Overview

Known only from shallow bay (0-29 m) and estuarine areas along the coast of New Zealand. Usually it is asscoiated with mixed shell-bryozoan rubble benthic communities. Some speciments have also been collected in association with Zostra and mangroves. At the type locality, it is found predominantly in association with spent shells of bivalves over a substrate of fine sand and silt at depths below the low tide mark (0-3 m) .

Scientific Name
Trachelochismus aestuarium
Authority
Conway, Stewart & King, 2017
Habitat
Brackish
Climate
Tropical
IUCN Status
LC
Max Length
4.3 cm
Depth Range
0–29 m
Trophic Level
3.1
Resilience
High
Vulnerability
30.00/100

🐟 Physical Description

Dorsal soft rays (total): 8; Anal soft rays: 7; Vertebrae: 32. This species is distinguished from its congeners by the following set of characters: adhesive disc region A without flattened papillae at the centre; apapillate area of adhesive disc region A is equal in width or wider than region C; the flap along posterior margin of anterior nostril is a short, thin blade; lachrymal canal pores 2 and 3 flush with surface of skin or weakly elevated above the skin; suborbital, mandibular and postorbital rows of superficial neuromasts are located in shallow grooves with smooth borders; suborbital row is continuous, extending along ventral margin of orbit; postorbital row with 3 superficial neuromasts; a single gill raker present along the anterior edge of ceratobranchial 1; D 8; A 7; pectoral-fin rays 25; vertebrae 14 + 18 = 32. Colouration: in life, a single dark brown or black irregular streak found on the lateral surface of head posterior to eye .Cross section: oval.

🌀 Behaviour

Behavioural data for Estuary clingfish is currently being reviewed.

🦐 Diet

Diet information for Estuary clingfish is currently being compiled.

🥚 Reproduction

Reproduction data for Estuary clingfish is currently being compiled.

🌍 Habitat & Distribution

Brackish; demersal; depth range 0 - 29 m . Tropical; 33°S - 47°S, 166°E - 179°E Southwest Pacific: New Zealand.

🌿 Ecology

Zone Preferences
🌿 Brackish ⬇️ Benthic
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00457 × L3.12 (TL)
Max TL
4.3cm
Dorsal Rays
8
Anal Rays
7
Vertebrae
32

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2024

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
30.00/100
Low vulnerability
Trophic Level
3.1
Predator
Climate Zone
Tropical
Described By
Conway, Stewart & King, 2017

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