Janbruin (Gymnocrotaphus curvidens) fish species and information / pictures of Janbruin - Gymnocrotaphus curvidens

Janbruin (Gymnocrotaphus curvidens) fish species information

Scientific Name
Gymnocrotaphus curvidens

Common Name
Janbruin

Biology
Dorsal spines (total): 10; Dorsal soft rays (total): 11-12; Anal spines: 3; Anal soft rays: 9 - 10. Eyes deep blue; the brown of live specimens fades quickly, leaving orange lines along the scale rows; sometimes with narrow dark crossbars (Ref. 3198).

Classification

Classified By
G?nther, 1859
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Porgies (Sparidae)

Distribution

Region
Southeast Atlantic
Distribution
Southeast Atlantic: endemic to South Africa, from the Cape to Durban.
Range
Unknown

Environment

Climate
Subtropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
80 m
Zone
demersal
Environment
Marine; demersal; depth range ? - 80 m (Ref. 3198)
Trophic Level
3.39 s.e. 0.44 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
50.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial
Vulnerability
Moderate to high vulnerability (54 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated