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| Common names: thresher (English), tiburón zorro (Espanol) |
Alopias pelagicus Nakamura, 1935
Body stout, cylindrical; head short, rounded between eyes, narrow; snout elongate, conical; forehead profile ~ straight; no groove on nape; eyes small; mouth small, ventral; teeth small, asymmetric, notched and serrated; gill openings - 5, short, last 2 over pectoral base; first dorsal large, midway between pectorals and pelvics; second dorsal and anal very small; pectorals very long, straight, with broad tips; pelvics large; upper lobe of tail extremely long, ~ equal to body length; no keels on tail base.
Back blue to grey, belly white; white of belly not extending onto flank over pectoral fin.
Size: 365 cm.
Habitat: oceanic, pelagic.
Depth: 0-700 m.
Indo-Pacific; central California to the Gulf of California, and the Revillagigedos and the Galapagos.