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Slender smooth-hound (Gollum attenuatus) fish species and information / pictures of Slender smooth-hound - Gollum attenuatus

Slender smooth-hound (Gollum attenuatus) fish species information

Scientific Name
Gollum attenuatus

Common Name
Slender smooth-hound

Biology
An uncommon to common deep-water bottom-dwelling shark found on the outermost continental shelf and upper slope of New Zealand and on adjacent seamounts and submarine banks. Seems adapted to waters of about 10?C and 34.8 ppt salinity. Feeds on a wide variety of fishes, cephalopods, and other invertebrates. Probably in schools. Females grow slightly larger than males. Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother, uterine milk is consumed additionally. Two young are born per litter.

Classification

Classified By
Garrick, 1954
Class
Sharks and Rays (Elasmobranchii)
Order
Ground sharks (Carcharhiniformes)
Family
False catsharks (Pseudotriakidae)

Distribution

Region
Southwest Pacific
Distribution
Southwest Pacific: occurs off New Zealand and on rises between New Zealand and the east coast of Australia, New Caledonia, and Fiji just south of the Western Central Pacific. Placement in Proscyllidae provisional, probably will be relocated in Pseudotriakidae.
Range
- 46°S

Environment

Climate
Deep-water
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
120 m
Depth To - meters
660 m
Zone
bathydemersal
Environment
Marine; bathydemersal; depth range 120 - 660 m , usually 400 - 600 m
Trophic Level
4.22 s.e. 0.69 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
107 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 1.2500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest
Vulnerability
Moderate vulnerability (40 of 100)
Resilience
Very Low, minimum population doubling time more than 14 years (Fec=2)
Threat To Humans
Harmless (Ref. 13566)
IUCN Red List Status
Least Concern (LC)