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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