Sixgill sawshark (Pliotrema warreni) fish species and information / pictures of Sixgill sawshark - Pliotrema warreni

Sixgill sawshark (Pliotrema warreni) fish species information

Scientific Name
Pliotrema warreni

Common Name
Sixgill sawshark

Biology
Found on the continental shelf and upper slope to at least 430 m (Ref. 247). Feeds on bony fish, also shrimp, mysids and squid (Ref. 5578). Ovoviviparous (Ref. 50449), with 5 to 7 young in a litter (Ref. 247). Probably uses its saw to stun and kill prey (Ref. 5578). Sometimes caught by sports anglers (Ref. 5578).

Classification

Classified By
Regan, 1906
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Billfishes (Istiophoridae)

Distribution

Region
Western Indian Ocean
Distribution
Western Indian Ocean: off Madagascar and from southern Mozambique to Cape Agulhas, South Africa.
Range
23°S - 37°S, 19°E - 45°E

Environment

Climate
Subtropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
60 m
Depth To - meters
430 m
Zone
demersal
Environment
Marine; demersal; depth range 60 - 430 m (Ref. 5578), usually 60 - ? m
Trophic Level
4.16 s.e. 0.66 Based on diet studies.
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
170 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 1.0156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest; gamefish: yes
Vulnerability
High to very high vulnerability (75 of 100)
Resilience
Very Low, minimum population doubling time more than 14 years (Fec=5)
Threat To Humans
  Harmless
IUCN Red List Status
  Near Threatened (NT)