Bigeye Sixgill Shark

About the Bigeye Sixgill Shark

Bigeye sixgill shark is a rare deepwater cow shark often been misidentified as the larger bluntnose sixgill Shark. Very little is known about this shark, with a poor knowledge of its distribution and no knowledge of population trends.

Adults are usually 180 cm long. It is found in tropical and temperate waters in the northeast and central Atlantic, Mediterranean Sea, Pacific and the Indian Ocean. They are found at a depth from 90-621 m with excursions to the surface. It is uncommonly taken by bottom trawl and longline fishnets but if of relatively small importance to fisheries.

The males mature at 142-178 cm and females at 123-157 cm . They are ovoviviparous, with 13-26 pups per litter measuring up to 40-45 cm total length at birth.  It feeds on bony fishes, tuna and crustaceans.


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Scientific Name Hexanchus nakamurai
OrderCow and Frilled Sharks - Hexanchiformes
CitesNot Listed
IUCNData Deficient
Litter Size 13
Common Length 180 cm
Max LenghtNA
Depth Range 0 - 600 m
DistributionNortheast Atlantic, Eastern Central Atlantic, Southeast Pacific, Western Central Atlantic, Eastern Indian Ocean, Western Indian Ocean, Mediterranean and Black Sea, Southwest Pacific, Western Central Pacific, Northwest Pacific