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🌊 Marine 🌡️ Tropical

Stout longtom

Tylosurus gavialoides Castelnau, 1873
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
4.4
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
55.00/100
Typical Length
80 cm
Depth Zone
reef

📖 Overview

Coastal species . Inhabit coral reefs and estuaries . Oviparous . Eggs may be found attached to objects in the water by tendrils on the egg's surface .

Scientific Name
Tylosurus gavialoides
Authority
Castelnau, 1873
Habitat
Marine
Climate
Tropical
Trophic Level
4.4
Resilience
Medium
Vulnerability
55.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 20 - 22; Anal soft rays: 18 - 23. Body and caudal peduncle are sub-cylindrical and covered with minute, somewhat deciduous scales; lateral-line low on the body; both jaws greatly produced with an inner row of short strong teeth, reduced in the outer row; dorsal and anal fins posterior on body with dorsal origin slightly anterior to anal fin origin, and both fins are elevated anteriorly; ventral fins abdominal, placed posteriorly, with distance from anal fin less than the fin base length; truncated caudal fin, with center slightly emarginated in adults; silvery on the sides and greenish above; in adults, with snout and fins dusky .Cross section: compressed.

🌀 Behaviour

Behavioural data for Stout longtom is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; brackish; reef-associated; depth range 0 - ? m. Tropical; 32°S - 35°S West Pacific: endemic to Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🪸 Reef Associated
Trophic Level
4.4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00126 × L3.11 (TL)
Dorsal Rays
21
Anal Rays
21

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
55.00/100
Moderate-High vulnerability
Trophic Level
4.4
Apex / Top predator
Climate Zone
Tropical
Described By
Castelnau, 1873

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 20 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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