Narkidae

Narke capensis

The sleepers skate ( Narkidae ( Gr. " narke " = paralysis) ) are one and live in the western Pacific in the Indian Ocean group of jitter Roche -like ( Torpediniformes ) that gets depending on the author, the rank of a family or subfamily.

Features

Sleeper rays are 18 centimeters to half a meter long. Your body disc is rounded at the front with usually a dorsal fin on the caudal peduncle. The rostrum is narrow and rod-shaped. The eyes are small, the jaws strong, very short and only little vorstreckbar ( protractil ). The lips are reinforced with cartilage, around the mouth is a shallow groove. Are the electric organs that have evolved from muscles on the sides of the head.

Genera and species

There are six genera and twelve species:

  • Genus Crassinarke Crassinarke dormitor Takagi, 1951.
  • Electrolux Addison Compagno & Heemstra, 2007.
  • Heteronarce bentuviai ( Baranes & Randall, 1989).
  • Heteronarce garmani Regan, 1921.
  • Heteronarce mollis ( Lloyd, 1907).
  • Heteronarce prabhui Talwar, 1981.
  • Narke capensis ( Gmelin, 1789).
  • Narke dipterygia ( Bloch & Schneider, 1801).
  • Narke japonica ( Temminck & Schlegel, 1850).
  • Temera hardwickii Gray, 1831st
  • Typhlonarke aysoni (Hamilton, 1902).
  • Typhlonarke tarakea Phillipps, 1929.
Henry Weed Fowler Johann Friedrich Gmelin Hermann Schlegel John Edward Gray Joseph S. Nelson FishBase
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