Daggernose shark (Isogomphodon oxyrhynchus) fish species and information / pictures of Daggernose shark - Isogomphodon oxyrhynchus

Daggernose shark (Isogomphodon oxyrhynchus) fish species information

Scientific Name
Isogomphodon oxyrhynchus

Common Name
Daggernose shark

Biology
An inshore shark found over rocky bottoms, entering estuaries and river mouths. Feeds on small schooling fishes including herring, anchovies and croakers. Viviparous, generally 4 embryos per brood; size at birth 38 to 41 cm. 244 cm record unconfirmed.

Classification

Classified By

M?ller & Henle, 1839

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Requiem sharks (Carcharhinidae)

Distribution

Region

Western Atlantic

Distribution

Western Atlantic: Trinidad, Guyana, Suriname, French Guiana, and Brazil.

Range

12°N - 20°S, 63°W - 34°W

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

15 m

Zone

demersal

Environment

Marine; brackish; demersal; depth range ? - 15 m (Ref. 13608)

Trophic Level

4.5 s.e. 0.80 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

160 cm

Common Length

100.0 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: subsistence fisheries

Vulnerability

High to very high vulnerability (74 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (K=0.11-0.12; tm=5-7; tmax=12; Fec=4)

Threat To Humans

Harmless (Ref. 244)

IUCN Red List Status

Critically Endangered (CR) (A2ad+3d+4ad)