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🌊 Marine Data Deficient 🌡️ Subtropical

Frog shark

Somniosus longus Tanaka, 1912
Max Length
110 cm
Max Weight
-
Lifespan
-
Trophic Level
4.1
Depth
250–1160 m
Climate
Subtropical
Resilience
-
Vulnerability
74.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Frog shark (Somniosus longus) is a ray-finned fish of the family Somniosidae. It inhabits marine (saltwater) waters. This species can reach a maximum total length of 110 cm. It occurs at depths between 250 and 1160 metres. With a trophic level of 4.1, it is a mid-level predator. It is assessed as Data Deficient on the IUCN Red List.

Scientific Name
Somniosus longus
Authority
Tanaka, 1912
Habitat
Marine
Climate
Subtropical
IUCN Status
DD
Max Length
110 cm
Depth Range
250–1160 m
Trophic Level
4.1
Vulnerability
74.00/100
Salinity
30–40 ppt

🐟 Physical Description

Vertebrae: 77 - 79. Somniosus longus is distinguished from S. rostratus in having a relatively longer second dorsal fin where overall length is almost equal to first dorsal fin 91-100% (vs. 76-88%); slightly larger eye with horizontal diameter more than 37% (mean 46%) of length from snout tip to eye (vs.

🌀 Behaviour

Behavioural data for Frog shark is currently being reviewed.

🦐 Diet

Diet information for Frog shark is currently being compiled.

🥚 Reproduction

Reproduction data for Frog shark is currently being compiled.

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 250 - 1160 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
4.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
110cm
Vertebrae
78

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2017

📊 Population Risk & Fisheries

Fishing Vulnerability
74.00/100
High vulnerability
Trophic Level
4.1
Apex / Top predator
Climate Zone
Subtropical
Described By
Tanaka, 1912

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