Shorefishes of the Tropical Eastern Pacific Online Information System
Updated: 06/12/2008  
Version: 1.0.4.53  

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Species Information          
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    Mobula  
Rajiformes  -  Mobulidae  -  Mobula  -  Mobula japanica

Mobula japanica

All Families(148) All Genera(504) All Species(1287)
short keel over spiracle
 
D tip white

tubercles on tail white
 
tail long (? disc), a row soft tubercles along side, with spine
 

  belly: white
 
3 m
 

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Mobula japanica (Müller & Henle, 1841)

Spinetail mobula,     Spinetail devil ray


Disc strongly rhomboidal, much wider than long; wings strongly pointed; head wide, projecting from disc; pectoral fins extend along head and form two large soft horns; front margin of pectoral fin ends under spiracle; a short keel present over the spiracle; eyes and spiracles on side of head; mouth ventral; teeth on both jaws; length of tooth bands ~ 75% of mouth width; teeth long, twice as long as wide, scattered; filter plates of gills with 18-25 side lobes, last lobe leaf shaped, plates separate at tips; tail with small dorsal fin at base long, slender, as long as or longer than disc width, its base oval, with 1 large serrated spine, plus a row of soft tubercles along each side; denticles on upper surface of body dense.


Upper surface dark blue to black; dark inside mouth; lower surface white; dorsal fin black with white tip; tubercles on sides of tail white.

Size: 310 cm wide.

Habitat: pelagic in coastal and oceanic waters.

Depth: to 30 m.

Circumtropical; southern California to Peru (except the Gulf of California)

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