Triakis

Superregnum : Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Classis: Chondrichthyes
Subclassis: Elasmobranchii
Superordo: Selachimorpha
Ordo: Carcharhiniformes

Familia: Triakidae
Genus: Triakis
Species: †T. antunesi – T. acutipinna – †T. beali – T. chalossensis – †T. kelleri – T. maculata – T. megalopterus – †T. muelleri – †T. rutimeyeri – T. scyllium – T. semifasciata – †T. tanoutensis – †T. wardi

Name

Triakis Müller & Henle, 1838

Type species: Triakis scyllium Müller & Henle, 1839

Synonyms

Triacis Agassiz, 1846
Cazon (subgenus of Mustelus) de Buen, 1959
Mustelus (Cazon) de Buen, 1959

References

Müller, J. & Henle, F.G.J. 1838. On the generic characters of cartilaginous fishes, with descriptions of new genera. Magazine of Natural History [E. Charlesworth, ed.] (n.s.) 2(7): 33–37; 88–91. Reference page.

Triakis is a genus of houndsharks in the family Triakidae.[2] The name comes from the Greek word τρι, tri meaning "three", and the Latin word acis meaning "sharp" or "pointed", in reference to the three-pointed teeth of these sharks.
Species

Scientific name	Common name	Distribution
T. acutipinna Kato, 1968	sharpfin houndshark	coastal waters of Ecuador
T. maculata Kner & Steindachner, 1867	spotted houndshark	eastern Pacific Ocean off the coast of South America
T. megalopterus A. Smith, 1839	sharptooth houndshark	shallow inshore waters from southern Angola to South Africa.
T. scyllium J. P. Müller & Henle, 1839	banded houndshark	northwestern Pacific Ocean from the southern Russian Far East to Taiwan
T. semifasciata Girard, 1855	leopard shark	Pacific coast of North America, from the U.S. state of Oregon to Mazatlán in Mexico