Steven's swellshark (Cephaloscyllium stevensi) fish species and information / pictures of Steven's swellshark - Cephaloscyllium stevensi

Steven's swellshark (Cephaloscyllium stevensi) fish species information

Scientific Name
Cephaloscyllium stevensi

Common Name
Steven's swellshark

Biology
Similar to its congeners, this species is most easily distinguished by its color pattern: gray-brown above, whitish ventrally, mottled with brown and whitish spots of variable size over head and body, including ventrally; 6 large dark brown saddle blotches dorsally on head and body and 3 on caudal fin; first four dorsal dark blotches connecting or leading obliquely to other dark blotches below; small white spots most distinct within or at edges of dark brown blotches (Ref. 86282).

Classification

Classified By
Clark & Randall, 2011
Class
Sharks and Rays (Elasmobranchii)
Order
Ground sharks (Carcharhiniformes)
Family
Cat sharks (Scyliorhinidae)

Distribution

Region
Western Pacific
Distribution
Western Pacific: Papua New Guinea.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
240 m
Depth To - meters
274 m
Zone
pelagic-neritic
Environment
Marine; pelagic-neritic; depth range 240 - 274 m (Ref. 86282)
Trophic Level
s.e. 0.00 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
66 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
Moderate vulnerability (45 of 100)
Resilience
Unknown
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated