The phrase "dogtooth tuna" refers to a species of large, predatory fish found in warm waters. They have sharp, dog-like teeth, which is why they are called dogtooth tuna.Full definition
When the currents are strong, the dive sites can be very fishy, schooling bumphead parrotfish, zillions of blue triggerfish, and dogtooth tunas passing by.Cruise overnight to the Strait of Patintie (Halmahera). (mermaid-liveaboards.com)
We also saw big dogtooth tuna and bump head parrotfish. (aggressor.com)
Look out for larger creatures like dogtooth tuna, turtles, grey reef sharks, silvertips and occasionally even hammerheads. (dive-the-world.com)