Gulf smooth-hound
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Carcharhiniformes
Family:	Triakidae
Genus:	Mustelus
Species:	M. sinusmexicanus
Binomial name
Mustelus sinusmexicanus Heemstra, 1997

The Gulf smooth-hound (Mustelus sinusmexicanus) is a houndshark of the family Triakidae, found on the continental shelves of the tropical western central Atlantic. The reproduction of this houndshark is placental viviparous.^[2]

This species has a long slender body, a plain grey/brown dorsum, pale/white ventrum and a large and rounded dorsal fin. The fins have a pale to white trailing margin fading towards adulthood. The caudal fin is deeply notched; its teeth are flat and pale. This type of shark can be found in the continental shelf between depths of 36 to 229 m (118 to 751 ft). The maximum recorded size was 140 cm (55 in).^[1]

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  Head
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  Jaws
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  Upper teeth
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  Lower teeth

• gulf-of-mexico-smoothhound/mustelus-sinusmexicanus Gulf of Mexico smoothhound (Mustelus sinusmexicanus) media from ARKive