Alex Mustard / Glasseye snapper (Heteropriacanthus cruentatus) head portrait with a cleaning Goby (Gobiosoma genie) East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Jeff Rotman / Close up of Goggle eye / Bigeye fish (Priacanthus hamrur) Red Sea, Egypt

Georgette Douwma / Big-eye or Goggle-eye (Priacanthus hamrur) on wreck. Note colour change from deep red to silver. Egypt, Red Sea

Georgette Douwma / Bigeye / Goggle-eye (Priacanthus hamrur) showing colour change from deep red to silver. Sipadan, Malaysia.

Peter Scoones / Goggle eye / Common bigeye fish schooling {Priacanthus hamrur} Sipadan, Malaysia

Alex Mustard / School of Crescent-tail bigeyes (Priacanthis hamrur) swims in front of a school of Bigeye jacks (Caranx sexfasciatus). Ulong Island, Rock Islands, Palau, Micronesia. Tropical west Pacific Ocean.

Pascal Kobeh / Common bigeyes (Priacanthus hamrur) on a hard coral reef with (Acropora) and (Porites) Palau. Philippine Sea.

Juergen Freund / Lunar-tailed bigeye (Priacanthus hamrur) Great Barrier Reef, Queensland, Australia

Juergen Freund / Lunar-tailed bigeye (Priacanthus hamrur) Great Barrier Reef, Queensland, Australia

Juergen Freund / Lunar-tailed bigeye (Priacanthus hamrur) Great Barrier Reef, Queensland, Australia

Franco Banfi / Shoal of Crescent-Tail bigeye (Priacanthus hamrur) Maldives, Indian Ocean

Franco Banfi / Crescent-Tail Bigeye (Priacanthus hamrur) group amongst black coral (Antipathes sp.) Maldives, Indian Ocean