Sphyrna tudes (Valenciennes, 1822)

Smalleye hammerhead

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Elasmobranchii \| Carcharhiniformes \| Sphyrnidae
Synonyms	Zygaena tudes, Sphyrna bigelowi, ... more
Common names	Requin-marteau à petits yeux, Cornuda ojichica, Hammerhead, ... more

You can sponsor this page

Upload your photos and videos
| All pictures | Google image |

Image of Sphyrna tudes (Smalleye hammerhead)

Picture by FAO

Add your observation in Fish Watcher

| Native range | PointMap |

AquaMaps Data sources: GBIF OBIS

Main reference

Compagno, L.J.V. 1984. (Ref. 244)
Other references | Biblio | Coordinator : Compagno, Leonard J.V. | Collaborators

Size / Weight / Age

Max length : 134 cm TL male/unsexed; (Ref. 244); 148 cm TL (female)

Environment

Benthopelagic; marine, usually ? - 12 m (Ref. 244)

Climate / Range

Subtropical; 46°N - 57°S, 73°W - 37°E (Ref. 244)

Southwest Atlantic: Venezuela to Argentina (Ref. 58839). Also Mediterranean Sea and Eastern Pacific (Ref. 7251).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

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).


IUCN Red List Status (Ref. 57073)	Threat to humans
Vulnerable (VU) (A2ad+3d+4ad)	Harmless

Human uses
Fisheries: subsistence fisheries


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment Abundance	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| E-book \| Field guide \| Identification keys \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

Download XML
Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Phylogenetic diversity index (Ref. 82805)

PD₅₀ = 0.5059

Resilience (Ref. 69278)

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


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High vulnerability (56 of 100)	High

Entered by Froese, Rainer

Back to Search

Fish Forum

Comments & Corrections

Sign our Guest Book