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🌊 Marine Least Concern 🌡️ Tropical

Snake eel

Apterichtus australis McCosker & Randall, 2005
Max Length
40 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
12–100 m
Climate
Tropical
Resilience
Medium
Vulnerability
33.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Occurs over sand with associated rock and coral reef bottoms and collected with ichthyocides and dredges at depths between 12-100 m . Largest specimen examined, female at 57 cm TL .

Scientific Name
Apterichtus australis
Authority
McCosker & Randall, 2005
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
40 cm
Depth Range
12–100 m
Latitude
34°S – 36°N
Trophic Level
4
Resilience
Medium
Vulnerability
33.00/100
Salinity
30–40 ppt

🐟 Physical Description

Vertebrae: 162 - 167. An elongate, finless species of sphagebranchin ophichthine (sensu McCosker 1977) with: tail 45-57% and head 5-5.5% of total length; 3 preopercular pores and 3 pores in supratemporal canal; teeth conical, uniserial on jaws and vomer; body mostly pale in preservative, creamy dorsally and reddish-brown ventrally with light and dark head markings in life; and mean vertebral formula 82–164, total vertebrae 162–167. Anterior nostril within an elongate tube, approximately 1/2 the diameter of the eye, its base about midsnout and anterolaterally directed when viewed from above. Posterior nostril opens in outer lip beneath anterior margin of eye. Branchial openings low, ventral; branchial region modestly expanded, creating a bulbous region in posterior half of head .: eel-like; Cross section: circular.

🌀 Behaviour

Behavioural data for Snake eel is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

Distinct pairing .

🌍 Habitat & Distribution

Marine; benthopelagic; depth range 12 - 100 m . Tropical; 36°N - 34°S, 136°E - 109°W Central Pacific: from Japan and the south Pacific island groups of Rapa, Pitcairn, Easter, New Zealand, and possibly Lord Howe.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00093 × L2.99 (TL)
Max TL
40cm
Vertebrae
165

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
33.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Climate Zone
Tropical
Latitude Range
36°N – 34°S
Described By
McCosker & Randall, 2005

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