Often, they will be encountered on the edges of deepwater reefs in places like Panama, Costa Rica and Australia. In places where black marlin are concentrated, live-baiting is an effective tactic.

Reef fish, too, respond to warmer waters—sometimes ... long finned and masked in black, that nibbles back strands of sargassum. And a school of parrotfish—fused teeth like wire cutters ...

Several reef fish species will open to recreational harvest ... Blueline tilefish and several species of grouper, including gag, black, red, yellowmouth, and yellowfin grouper, scamp, red hind ...

Researchers have found that reef fish from the Arabian Gulf, the world's hottest sea, exhibit a higher tolerance to temperature fluctuations compared to those from more thermally stable coral reefs.