Here.

Put flying fish in a wind tunnel, and they’re as aerodynamically
polished as most birds.

Earlier analyses of their bodies suggested as much, but the calculations were
hypothetical.

“We directly measure the aerodynamic forces,” wrote aerospace engineers Hyungmin
Park and Haecheon Choi of Seoul National University in a Sept. 10 Journal of
Experimental Biology paper. “The gliding performance of flying fish is
comparable to those of bird wings such as the hawk, petrel and wood duck.”