Grey sharpnose shark (Rhizoprionodon oligolinx) fish species and information / pictures of Grey sharpnose shark - Rhizoprionodon oligolinx

Grey sharpnose shark (Rhizoprionodon oligolinx) fish species information

Scientific Name
Rhizoprionodon oligolinx

Common Name
Grey sharpnose shark

Biology
A little known inshore and offshore shark found on continental and insular shelves (Ref. 244). Found to depths of at least 36 m (Ref. 9997). Probably feeds on fishes, cephalopods, and crustaceans (Ref. 6871). Viviparous (Ref. 50449). Commonly caught by inshore demersal gillnet fisheries, especially off Java (Ref.58048). Utilized fresh and probably dried salted for human consumption (Ref. 244). Also used for fishmeal (Ref. 9997) and fins (Ref.58048). Minimum depth from Ref. 58018.

Classification

Classified By

Springer, 1964

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Requiem sharks (Carcharhinidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: Persian Gulf east to Thailand, Indonesia, China, and Japan. Recorded from the Gulf of Carpentaria (Ref. 6871) and Palau (Ref. 244). This species is very close to Rhizoprionodon taylori, but is geographically separated from it (Ref. 244).

Range

30°N - 18°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

36 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 0 - 36 m (Ref. 9997)

Trophic Level

4.14 s.e. 0.55 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

70 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial

Vulnerability

Low to moderate vulnerability (32 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (Fec=3)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)