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| Common names: thresher (English), tiburón zorro (Espanol) |
Alopias superciliosus (Lowe, 1841)
Body stout, cylindrical; head short, flat between eyes; deep V-shaped horizontal groove on each side of head from behind eye to over gill slits; eyes very large, dorsal; snout long, bulbous, conical; mouth small, ventral; teeth long, awl-like; gill openings - 5, short, last 2 over pectoral base; first dorsal large, its base ending just before pelvic origin; second dorsal and anal very small; pectorals very long, narrow, curved, broad tip; pelvics large; upper lobe of tail extremely long, ~ equal to body length, fin broad; no keels on tail base.
Back purplish grey; belly cream, that color not extending onto flank over pectoral fin.
Size: > 460 cm.
Habitat: oceanic, pelagic.
Depth: 0-723 m.
Circuntropical; California to the Gulf of California, Ecuador and northern Peru, the Revillagigedos, Malpelo and the Galapagos.