Mediterranean Flyingfish

The Mediterranean Flyingfish (Cheilopogon heterurus), also called the Piebald or Blotchwing Flyingfish, is a member of the flyingfish family Exocoetidae. It is the most frequently recorded flyingfish species in the Mediterranean Sea, where it occurs year-round, particularly in the eastern basin, and it also ranges into the adjacent eastern Atlantic. As a coastal pelagic species, it lives at the ocean surface rather than near the seafloor, using enlarged pectoral fins to glide above the waves. The species can reach a maximum length of about 40 cm, though individuals up to 15 cm are more typical in surveys. It feeds on plankton and small crustaceans and is an important prey species for larger pelagic predators in the region.

• Slender, torpedo-shaped body, typically 15-40 cm long
• Long, broad pectoral fins with a distinctive mottled or blotched pattern of pale and dark markings, giving rise to the "piebald" and "blotchwing" names
• Dark blue-black back sharply demarcated from a silvery-white belly
• Deeply forked tail fin with an elongated lower lobe used to build speed before gliding
• Only the pectoral fins are enlarged for gliding; pelvic fins remain relatively short, unlike four-winged flyingfish
• Distinguished from other Mediterranean and eastern Atlantic flyingfish primarily by the mottled crossband pattern on the pectoral fins

Mediterranean Flyingfish live at the surface of warm coastal and pelagic waters throughout the Mediterranean Sea, where they are present in all seasons and are the most commonly recorded flyingfish species in the region. Their range extends into the adjacent eastern Atlantic as well. They generally occupy the upper few meters of open water, favoring warm surface layers over deep basins rather than shallow reef or estuarine habitat. As with other flyingfish, distribution is closely tied to sea surface temperature and current patterns, and the species is more often encountered over open water away from the immediate coastline, though it can also occur closer to shore in favorable conditions.

Mediterranean Flyingfish form loose surface schools and rely on the same gliding strategy as other Exocoetidae: rapid beats of the elongated lower tail lobe generate speed underwater, after which the fish breaks the surface and spreads its broad, mottled pectoral fins to glide over the waves. This behavior primarily helps the species evade fast predatory fish hunting from below, including larger pelagic fish that prey heavily on flyingfish in the Mediterranean. It feeds on plankton and small crustaceans near the surface. Spawning occurs in open water, with eggs bearing sticky filaments that attach to floating vegetation or debris, a reproductive strategy shared across the flyingfish family.