Edmund's spurdog (Squalus edmundsi) fish species and information / pictures of Edmund's spurdog - Squalus edmundsi

Edmund's spurdog (Squalus edmundsi) fish species information

Scientific Name
Squalus edmundsi

Common Name
Edmund's spurdog

Biology
This moderate-sized species of the ?mitsukurii group? has the following set of characters: moderately elongate body, depth 9.9-11.5% TL; narrowly triangular snout, moderately long, preoral length 2.0-2.44 times the horizontal prenarial length, 10.3-10.8% TL, mouth width 1.56-1.81 (1.73) times the horizontal prenarial length; pre-first dorsal length 27.7-30.0 (28.5)% TL; pre-second dorsal length 60.2-62.9 (61.3)% TL; interdorsal space 23.5-25.6 (24.7)% TL; weakly bifurcated anterior nasal flap; first dorsal fin large, upright, first dorsal-fin height 7.0-8.0% TL; first dorsal-fin spine strong, upright and broad-based; second dorsal-fin spine long, moderately broad-based; prepectoral length 21.9-23.1 (22.6)% TL; pelvic-caudal space 25.0-26.7 (25.9)% TL; pectoral fin of adult individuals not falcate; pectoral-fin inner margin relatively short, 6.4-7.1% TL; caudal bar is oblique, extending along base of lower lobe to caudal fork, less than 0.1-0.2 of posterior margin of upper lobe, upper c

Classification

Classified By
White, Last & Stevens, 2007
Class
Sharks and Rays (Elasmobranchii)
Order
Bramble, Sleeper and Dogfish sharks (Squaliformes)
Family
Dogfish sharks (Squalidae)

Distribution

Region
Eastern Indian Ocean
Distribution
Eastern Indian Ocean: Western Australia and Indonesia.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
204 m
Depth To - meters
850 m
Zone
pelagic-oceanic
Environment
Marine; pelagic-oceanic; depth range 204 - 850 m (Ref. 58442), usually 300 - 500 m (Ref. 58442)
Trophic Level
4.34 s.e. 0.65 Based on size and trophs of closest relatives
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
70.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
High vulnerability (61 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Near Threatened (NT)