Tetronarce
Tetronarce nobiliana
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Batoidea
Order: Torpediniformes
Family: Torpedinidae
Genus: Tetronarce
T. N. Gill, 1862
Species

Nine; see text

Tetronarce is a genus of rays, commonly known as electric rays. They are slow-moving bottom-dwellers capable of generating electricity as a defense and feeding mechanism. Tetronarce species tend to attain a much larger size (up to 180 cm TL) than Torpedo species, which are usually small to moderate sized (range from 25 to 80 cm TL) electric rays.[1]

Species

There are currently nine recognized species in this genus:[1]

ImageNameCommon nameDistribution
Tetronarce californica Ayres, 1855Pacific electric raynortheastern Pacific Ocean from Baja California to British Columbia.
Tetronarce cowleyi Ebert, D. L. Haas & M. R. de Carvalho, 2015 [2]Cowley's torpedo rayaround southern Africa, from Walvis Bay, Namibia to Algoa Bay, Eastern Cape, South Africa
Tetronarce fairchildi F. W. Hutton, 1872New Zealand torpedoNew Zealand
Tetronarce formosa D. L. Haas & Ebert, 2006Taiwan torpedoNorthwest Pacific: Taiwan.
Tetronarce macneilli Whitley, 1932Shorttail torpedosouthern Australia from Port Hedland to the Swain Reefs
Tetronarce nobiliana Bonaparte, 1835Atlantic torpedoAtlantic Ocean, from Nova Scotia to Brazil in the west and from Scotland to West Africa and off southern Africa in the east
Tetronarce puelcha Lahille, 1926Argentine torpedoArgentina, Brazil, and Uruguay.
Tetronarce tokionis S. Tanaka (I), 1908Trapezoid torpedoJapan and Taiwan.
Tetronarce tremens F. de Buen, 1959Chilean torpedoChile, Colombia, Costa Rica, Ecuador, and Peru.

References

  1. 1 2 Carvalho, M.R. de. (2015): Torpedinidae. In : Heemstra, P.C., Heemstra, E. & Ebert, D.A. (Eds.), Coastal Fishes of the Western Indian Ocean. Vol. 1. South African Institute for Aquatic Biodiversity, Grahamstown, South Africa. In press.
  2. Ebert, D.A., Haas, D.L. & de Carvalho, M.R. (2015): Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae). Zootaxa, 3936 (2): 237–250.


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