Speartooth shark (Glyphis glyphis) fish species and information / pictures of Speartooth shark - Glyphis glyphis

Speartooth shark (Glyphis glyphis) fish species information

Scientific Name
Glyphis glyphis

Common Name
Speartooth shark

Biology
Found presumably inshore. Largest whole specimen collected was that of a female with maturity unknown, 175 cm TL. Large sets of jaws examined indicate that size can attain up to 2 m and possibly 3 m (Ref. 76952). Viviparous (Ref. 50449). Biology poorly known.

Classification

Classified By

M?ller & Henle, 1839

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Requiem sharks (Carcharhinidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: northern Australia and New Guinea (Ref. 84281).

Range

5°N - 21°S

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

demersal

Environment

Marine; freshwater; brackish; demersal

Trophic Level

4.18 s.e. 0.67 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

100.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 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

High vulnerability (60 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be

Threat To Humans

Harmless

IUCN Red List Status

Endangered (EN) (C2a(i))