Triakis is a genus of houndsharks in the family Triakidae. The name comes from the Ancient Greek word Greek, Ancient (to 1453);: τρι- meaning, and the Latin word Latin: acis meaning or, in reference to their three-pointed teeth.
| Image | 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 | |