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🌊 Marine Least Concern 🌡️ Tropical

Atlantic bigeye sixgill shark

Hexanchus vitulus Springer & Waller, 1969
Max Length
230 cm
Max Weight
-
Lifespan
-
Trophic Level
4.3
Depth
0–700 m
Climate
Tropical
Resilience
Medium
Vulnerability
61.00/100
Typical Length
120 cm
Depth Zone
-

📖 Overview

Found on continental and insular slopes. Feeds mainly on bony fishes and cephalopods, sometimes on crustaceans Viviparous, with 13 to 26 young in a litter. Size at birth measures to about 40-45 cm TL . It was reported that there is likely some stratification of the distribution by size, presumably with larger individuals present in deeper waters (mostly adult captured in the Bahamas at an average depth of 639.5 m) than the juveniles (< 350 m in Belize and northern Gulf of Mexico). Resource and habitat partitioning between juvenile and much larger adult bluntnose sixgill sharks has been suggested as predation avoidance .

Scientific Name
Hexanchus vitulus
Authority
Springer & Waller, 1969
Habitat
Marine
Climate
Tropical
IUCN Status
LC
Max Length
230 cm
Depth Range
0–700 m
Trophic Level
4.3
Resilience
Medium
Vulnerability
61.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Atlantic bigeye sixgill shark is currently being compiled.

🌀 Behaviour

Behavioural data for Atlantic bigeye sixgill shark is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

🐣 Viviparous 🤰 Viviparous
Size at Maturity
160cm TL

Viviparous, with number of young 13 in one litter. Length at birth about 40 to 45 cm.

🌍 Habitat & Distribution

Marine; bathydemersal; depth range 0 - 700 m . Tropical; 46°N - 6°N, 98°W - 28°E Atlantic Ocean: Gulf of Mexico, the Caribbean to Venezuela and Guyanas; Bay of Biscay, from France to Morocco and the Mediterranean.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
4.3±0.5
Food Items

bony fishes and cephalopods, sometimes on crustaceans Viviparous, with 13 to 26 young in a litter

📐 Morphometrics

Length–Weight Relationship: W = 0.00224 × L3.15 (TL)
Max TL
230cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
61.00/100
High vulnerability
Trophic Level
4.3
Apex / Top predator
Climate Zone
Tropical
Described By
Springer & Waller, 1969

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