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🌊 Marine Least Concern 🌡️ Subtropical

Snakelet

Halidesmus scapularis Günther, 1872
Max Length
20 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
0–16 m
Climate
Subtropical
Resilience
Medium
Vulnerability
29.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Snakelet (Halidesmus scapularis) is a ray-finned fish of the family Pseudochromidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 20 cm. It occurs at depths between 0 and 16 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
Halidesmus scapularis
Authority
Günther, 1872
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
20 cm
Depth Range
0–16 m
Trophic Level
3.3
Resilience
Medium
Vulnerability
29.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 58 - 63; Anal spines: 0; Anal soft rays: 48 - 52; Vertebrae: 66 - 69. Light to dark brown with color, sometimes with dusky crossbars . Middle lateral line joining with the dorsal lateral line just above the pectoral fin base; midline of parietal canal with a single pore; dark spot above pectoral fin . Pelvic fin rarely absent; dorsal and anal fin membranes united only basally to caudal fin .: eel-like; Cross section: circular.

🌀 Behaviour

Behavioural data for Snakelet 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 - 16 m. Subtropical; 31°S - 35°S Southeast Atlantic: False Bay, Cape Province to Coffee Bay, Transkei in southeastern Africa.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.3±0.58

📐 Morphometrics

Length–Weight Relationship: W = 0.00102 × L3.06 (TL)
Max TL
20cm
Dorsal Spines
1
Dorsal Rays
61
Anal Rays
50
Vertebrae
68

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Subtropical
Described By
Günther, 1872

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