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🌊 Marine Data Deficient 🌡️ Subtropical

Duckbill flagfin

Leptaulopus erythrozonatus Gomon, Struthers & Stewart, 2013
Max Length
27.4 cm
Max Weight
-
Lifespan
-
Trophic Level
4
Depth
130–280 m
Climate
Subtropical
Resilience
-
Vulnerability
23.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Duckbill flagfin (Leptaulopus erythrozonatus), first described by Gomon, Struthers & Stewart, 2013 is a medium-sized fish. Adults typically reach 27.40 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 130 to 280 metres. It occurs in Subtropical waters. Diet is predominantly piscivorous, targeting other fish and larger prey. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Leptaulopus erythrozonatus
Authority
Gomon, Struthers & Stewart, 2013
Habitat
Marine
Climate
Subtropical
Body Shape
Elongated
IUCN Status
DD
Max Length
27.4 cm
Depth Range
130–280 m
Trophic Level
4
Vulnerability
23.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Leptaulopus
Leptaulopus
Species
Duckbill flagfin
Leptaulopus erythrozonatus

🐟 Physical Description

Dorsal soft rays (total): 15 - 16; Anal soft rays: 10 - 11; Vertebrae: 44. This species is distinguished by the following characters: D 15-16; A 10-11; vertebrae 26 or 27 + 17 or 18 = 44; lateral line scales 44 + 1, below lateral line 4.5; predorsal scales 20; gill rakers 3 + 12; elongated snout, length 11.5-12.4% SL and 34.6-36.5% HL, which is much longer than eye diameter, dorsoventrally flattened, narrowly rounded from above; narrow bony interorbital, width 3.0-3.5% SL and 8.9-10.3% HL; snout tip to dorsal fin origin 42.5-43.7% SL in distance and 128-129% HL; anal n base 92-9.8% SL and 27.0-29.1% HL; colour of posterior end of maxilla and posterior and ventral margins of preopercle stark white; translucent dorsal fin with 4-6 narrow submarginal stripes from base to outer edge of fin, stripes posteriorly angled obliquely, intervening spaces of fin rays white; caudal fin white with 4-5 red bands crossing each lobe and proximal bands continuous across fin in some .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Duckbill flagfin 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; demersal; depth range 130 - 280 m . Subtropical South Wales (NE coast of North I.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00437 × L3.12 (TL)
Max TL
27.4cm
Dorsal Rays
16
Anal Rays
11
Vertebrae
44

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
23.00/100
Low vulnerability
Trophic Level
4
Apex / Top predator
Body Shape
Elongated
Climate Zone
Subtropical
Described By
Gomon, Struthers & Stewart, 2013

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