Flying fish is a unique fish. They do not actually fly by flapping wings, like birds do. Instead, they jump from the water and use their fins to glide through the air. They live in warm seas throughout the world. There are about 40 different species. They are close relatives of the needlefish, halfbeaks, and sauries.
These fishes are usually less than 45 centimeters long and are deep blue on the back and sides and silvery underneath. Their pectoral fins are almost as long as the body and serve as wings. The tail fin may vibrate as rapidly as 50 times per second and by these movements the fish may make several thrusts into the air in rapid succession.