Smalleye hammerhead (Sphyrna tudes) fish species and Smalleye hammerhead information

Scientific Name
Sphyrna tudes

Common Name
Smalleye hammerhead

Biology
A little-known inshore shark of the continental shelf, found down to at least 12 m depth. Feeds on small bony fishes, including sea catfish and grunts, but also newborn scalloped hammerheads, swimming crabs, squids, and shrimp. Viviparous with a yolk-sac placenta; number of young probably 6 to 9 per litter (Ref. 244).

Classification

Classified By

Valenciennes, 1822

Class

Sharks and Rays (Elasmobranchii)

Order

Ground sharks (Carcharhiniformes)

Family

Hammerhead / bonnethead / scoophead sharks (Sphyrnidae)

Distribution

Region

Southwest Atlantic

Distribution

Southwest Atlantic: Venezuela to Argentina (Ref. 58839). Also Mediterranean Sea and Eastern Pacific (Ref. 7251).

Range

46°N - 57°S, 73°W - 37°E

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Marine; benthopelagic, usually ? - 12 m (Ref. 244)

Trophic Level

3.64 s.e. 0.54 Based on diet studies.

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

134 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5059 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 vulnerability (56 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (Fec=6)

Threat To Humans

Harmless

IUCN Red List Status

Vulnerable (VU) (A2ad+3d+4ad)

Smalleye hammerhead (Sphyrna tudes) fish species and information / pictures of Smalleye hammerhead - Sphyrna tudes

Smalleye hammerhead (Sphyrna tudes) fish species information

Classification

Distribution

Environment

Physical Size and Genetics

Human Uses and Population