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| Common names: smoothhound (English), musola (Espanol), tollo (Espanol) |
Mustelus mento Cope, 1877
Stocky, hunched body; short head; snout short, bluntly pointed; mouth angular, short, narrow; teeth irregularly rounded, without points; eyes horizontal ovals, with ventral nictitating membranes; width between eyes = 4.5-5.6% of TL; 5 gill slits, last 2 over pectoral fin base; 2 large dorsal fins, second slightly smaller than first; first dorsal a blunt, broad triangle, nearer pelvic than pectoral; rear edges of dorsals denticled; distance between dorsal fins = 17-22% of TL; anal fin smaller than and with origin under middle of second dorsal; tail strongly asymmetrical, lower lobe not expanded or with concave rear edge; fins with blunt tips; skin denticles on flank pointed ovals with a single point, with or without canal on base.
Grey to grey-brown above, paler below; sides and upper body with many white spots; juveniles with dark bars.
Size: 130 cm.
Habitat: upper continental shelf, demersal.
Depth: 15-50 m.
SW Atlantic and SE Pacific (Colombia to Chile, Galapagos Islands).