Galapagos Species Checklist

Sphyrna lewini (Griffith & Smith, 1834)

tiburón martillo, Scalloped hammerhead

Photo: Inti Keith, CDF.
Photo: Inti Keith, CDF.

Size: At least 4.2 m. Silver-gray to gray-brown, fading to white underside. Underside tips of pectoral fins dusky. Rear edge of vental fin straight.

Habitat: Areas of deep water near dropp-offs. Form large schools of 400 individuals, swimming well organized

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Chordata

Class
Chondrichthyes (= Elasmobranchii)

Order
Carcharhiniformes

Family
Sphyrnidae

Genus
Sphyrna

Species
lewini

Taxon category: Accepted

Syn.: Cestracion leeuwenii Day, 1865, Cestracion oceanica Garman, 1913, Sphyrna diplana Springer, 1941, Zygaena erythraea Klunzinger, 1871, Zygaena indica van Hasselt, 1823, Zygaena lewini Griffith & Smith, 1834, fide Appeltans et al. (2010)

Status

Endangered

Distribution

Distribution: Tropical waters, less frequent in temperate regions; know from sothern California to Ecuador including Galapagos. California to Northern Peru and all the offshore islands of the Eastern Pacific. Circumtropical.

References

  • Grove, J.S. Lavenberg, R.J. (1997) The Fishes of the Galapagos Islands. Stanford University Press, Stanford California. 862 pp.
  • Humann, P. Deloach, N. (2003) Reef Fish Identification - Galapagos. New World Publication, Inc. Florida USA & Libri Mundi, Quito, Ecuador, 226 pp.
  • Appeltans, W. Bouchet, P., Boxshall, G.A., Fauchald, K., Gordon, D.P., Hoeksema, B.W., Poore, G.C.B., van Soest, R.W.M., Stöhr, S., Walter, T.C., Costello, M.J. (eds.) (2010) World Register of Marine Species (WoRMS). Available online at http://www.marinespecies.org.
  • IUCN (2010) IUCN Red List of Threatened Species. Version 2010.1. <www.iucnredlist.org>. Downloaded on 26 April 2010.
  • Baum, J. et. al. (2007) Sphyrna lewini www.iucnredlist.org
  • McCosker, J.E. Rosenblatt, R.H. (2010) The fishes of the Galápagos Archipelago: an update. Proc. Calif. Acad. Sc., Ser. 4, vol. 61, Suppl. II, no. 11: 167-195.
  • Edgar, G.J. Fariña, J.M., Calvopiña, M., Martínez, C. & Banks, S. (2002) Comunidades submareales rocosas II: Peces y macroinvertebrados móviles. In: Danulat, E. & Edgar, G.J. (eds.) (2002): Reserva Marina de Galápagos. Línea Base de la Biodiversidad. Fundación Charles Darwin/Servicio Parque Nacional Galápagos, Santa Cruz, Galápagos, Ecuador, p. 68-97.
  • Constant, P. (2007) Marine Life of the Galapagos. The Diver's guide to Fishes, Whales, Dolphins and marine Invertebrates, 307 pp.
  • Hickin, N. (1979) Animal life of the Galapagos. Ferundune Books, Faringdon, U.K., 236 pp.

The “Charles Darwin Foundation for the Galapagos Islands”, in French “Fondation Charles Darwin pour les îles Galapagos”, Association International sans but lucratif (“AISBL”), has its registered office located at Chaussée de la Hulpe 177 Bte 20 (rez) - 1170, Brussels, and is registered under the trade registry of Brussels under the number 0409.359.103.

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