Claudio Contreras / Big Long-nosed Butterflyfish (Forcipiger flavissimus), Socorro Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Islands),...

Claudio Contreras / Big Long-nosed Butterflyfish (Forcipiger flavissimus), Socorro Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Islands),...

Georgette Douwma / Long-nosed butterflyfish (Forcipiger flavissimus) Lembeh Strait, North Sulawesi, Indonesia.

Fred Bavendam / Longnose Butterflyfish (Forcipiger longirostris) underwater, side view, Manado, North Sulawesi, Indonesia

Gary Bell/ Oceanwide / Longnose Butterflyfish (Forcipiger longirostris), Great Barrier Reef, Australia

Joel Sartore / Photo Ark / Yellow longnose butterflyfish (Forcipiger flavissimus) portrait, Omaha's Henry Doorly Zoo and Aquarium. Captive, occurs throughout tropical waters.

Joel Sartore / Photo Ark / Yellow longnose butterflyfish (Forcipiger flavissimus) portrait, Omaha's Henry Doorly Zoo and Aquarium. Captive, occurs throughout tropical waters.

Doug Perrine / Big longnose butterflyfish (Forcipiger longirostris) pair, one displaying rare, half-dark colour phase, feeding among corals on reef, Honokohau, North Kona, Hawaii, Pacific Ocean.

Doug Perrine / Big longnose butterflyfish (Forcipiger longirostris) displaying rare, half-dark color phase, swimming over Finger coral ( Porites compressa), North Kona, Hawaii, Pacific Ocean.

Doug Perrine / Big longnose butterflyfish (Forcipiger longirostris) displaying rare, dark colour phase, portrait, Kona, Hawaii, Pacific Ocean.

Doug Perrine / Two Big longnose butterflyfish (Forcipiger longirostris) hunting for prey hidden within the branches of an Antler coral (Pocillopora grandis), North Kona, Hawaii, Pacific Ocean.

Doug Perrine / Big longnose butterflyfish (Forcipiger longirostris) swimming over coral reef, South Kona, Hawaii, Pacific Ocean