Gulf smooth-hound continental shelf between depths of 36 m to 229 m. The maximum recorded size was 140 cm. Gulf smooth-hound 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. The Gulf smooth-hound shark is a type of shark that comes from the Triakidae family. It 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
Slender smooth-hound numerous unique traits. More recently, he and other taxonomists have increasingly tended to group "Gollum" and "Pseudotriakis" together in the family Pseudotriakidae. This arrangement was corroborated by a 2006 phylogenetic study by Juan Andrés López and colleagues, which found that the two genera have a high degree of genetic similarity across four protein-coding genes and form a natural clade apart from "Proscyllium". An additional species of "Gollum" has now been described, and there is at least one additional species yet to be described. The range of the slender smooth-hound is restricted to the upper and middle continental slope around New