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🌊 Marine Least Concern 🌡️ Subtropical

Allen's perchlet

Zalanthias alleni Randall, 1980
Max Length
7.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
62–256 m
Climate
Subtropical
Resilience
High
Vulnerability
14.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Allen's perchlet (Zalanthias alleni) is a ray-finned fish of the family Anthiadidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 7.1 cm. It occurs at depths between 62 and 256 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Zalanthias alleni
Authority
Randall, 1980
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
IUCN Status
LC
Max Length
7.1 cm
Depth Range
62–256 m
Trophic Level
3.3
Resilience
High
Vulnerability
14.00/100
Salinity
30–40 ppt

🐟 Physical Description

This species is distinguished from its congeners by the following set of characters: segmented dorsal rays 14 (rarely 13); pectoral rays 16 (rarely 15 or 17), middle rays branched; lateral line complete, 31-36 tubed scales; no antrorse spines on ventral margin of preopercle; no scales on maxilla; relatively distinct in having a short dark stripe in front of the eye, a faint dusky stripe from behind the eye across upper side of body, and a faint small dusky spot at midbase of caudal fin (stripes and spot better developed in small specimens) .: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Allen's perchlet 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 62 - 256 m . Subtropical; 29°S - 33°S Endemic to Western Australia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
7.1cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2022

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Randall, 1980

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