Crocodile shark (Pseudocarcharias kamoharai) fish species and information / pictures of Crocodile shark - Pseudocarcharias kamoharai

Crocodile shark (Pseudocarcharias kamoharai) fish species information

Scientific Name
Pseudocarcharias kamoharai

Common Name
Crocodile shark

Biology
An oceanic species usually found offshore and far from land but sometimes occurring inshore. Epi- and mesopelagic, with occasional near-bottom occurrences. Although considered not dangerous to people, its powerful jaws, jaw muscles and teeth invite respect. Flesh not appreciated and therefore the catch is usually discarded ; utilized for its large, squalene-rich liver. Feeds on small pelagic bony fishes, squids and shrimps. Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother. With 4 young in a litter, born at 40 to 43 cm TL. Maximum length for female given in Romanove et.al 1994. Common bycatch of tuna longline fisheries, and occasionally tuna gillnet fisheries.

Classification

Classified By
Matsubara, 1936
Class
Sharks and Rays (Elasmobranchii)
Order
Mackerel sharks (Lamniformes)
Family
Crocodile sharks (Pseudocarchariidae)

Distribution

Region
Tropical and subtropical waters of all oceans.
Distribution
Tropical and subtropical waters of all oceans.
Range
40°N - 40°S, 180°W - 180°E

Environment

Climate
Subtropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
0 m
Depth To - meters
590 m
Zone
pelagic-oceanic
Environment
Marine; pelagic-oceanic; oceanodromous ; depth range 0 - 590 m , usually 0 - 200 m
Trophic Level
4.21 s.e. 0.60 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
110 cm
Common Length
100.0 cm
Phylogenetic Diversity Index
PD50 = 1.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: minor commercial
Vulnerability
Moderate to high vulnerability (54 of 100)
Resilience
Very Low, minimum population doubling time more than 14 years (Fec=4)
Threat To Humans
Harmless
IUCN Red List Status
Near Threatened (NT)