IUCN threat status:

Least Concern (LC)

Comprehensive Description

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Description

  Common names: smoothhound (English), tiburón (Espanol), musola (Espanol)
 
Mustelus lunulatus Jordan & Gilbert, 1882


Sicklefin smoothhound


Elongate, slender body; snout pointed; mouth angular, not long; teeth molariform and asymmetrical, with 1 small blunt point; eyes horizontal ovals, with ventral nictitating membranes; wide between eyes = 4.3-4.9% of TL; nostril length 53-74% of distance between nostrils; spiracle length 0.3-0.8% of TL; upper lip fold notably shorter than lower lip fold; 5 gill slits, last 2 over pectoral fin base; 2 large dorsal fins, second slightly smaller than first; first dorsal with concave rear edge, middle of its base closer to pectoral base than pelvic base; dorsal fins with denticles rear edges; distance between dorsal fins = 18-22% of TL; origin of second dorsal fin well before origin of anal fin; anal fin smaller than and with origin under second dorsal; tail strongly asymmetrical, lower lobe expanded, with strongly concave rear edge; skin denticles on flank are pointed ovals with a single point, and canals along 2/3 of length.


Grey above, white below; no dark rear frayed edges to dorsal, anal and tail fins.



Size: 170 cm.

Habitat: continental shelf, demersal.

Depth: 10-200 m.

Southern California to Peru; the Galapagos and Malpelo.
   

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© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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