Atlantic sharpnose shark (Rhizoprionodon terraenovae) fish species and information / pictures of Atlantic sharpnose shark - Rhizoprionodon terraenovae

Atlantic sharpnose shark (Rhizoprionodon terraenovae) fish species information

Scientific Name
Rhizoprionodon terraenovae

Common Name
Atlantic sharpnose shark

Biology
Reaches at least 103 cm TL (Ref. 244). Abundant in the continental shelves, from the intertidal to deeper waters. Often occurs close to the surf zone off sandy beaches, and also enclosed bays, sounds, and harbors, in estuaries and river mouths. Feeds on small bony fishes, shrimps, crabs, segmented worms and mollusks (gastropod feet). Viviparous, with 1 to 7 young in a litter. Size at birth about 29 to 37 cm. Utilized for human consumption.

Classification

Classified By

Richardson, 1836

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Requiem sharks (Carcharhinidae)

Distribution

Region

Western Atlantic

Distribution

Western Atlantic: New Brunswick, Canada to the Gulf of Mexico. Southwest Atlantic: coasts of Brazil.

Range

43°N - 25°S, 100°W - 32°W

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

10 m

Depth To - meters

280 m

Zone

demersal

Environment

Marine; brackish; demersal; depth range 10 - 280 m (Ref. 26938), usually ? - 10 m (Ref. 55195)

Trophic Level

4.27 s.e. 0.76 Based on diet studies.

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

110 cm

Common Length

70.0 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: subsistence fisheries; gamefish: yes

Vulnerability

Moderate to high vulnerability (46 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (K=0.19-0.45(?); tmax=10; tm=4; Fec 1-7)

Threat To Humans

  Harmless

IUCN Red List Status

  Least Concern (LC)