Georgette Douwma / Saddleback butterflyfish (Chaetodon falcula) Andaman Sea, Thailand

Georgette Douwma / Saddleback butterflyfish (Chaetodon falcula) Andaman Sea, Thailand

Norbert Wu / Pacific Double-saddle Butterflyfish (Chaetodon ulietensis) school with snorkeler, Bora Bora, French Polynesia

David Fleetham / Saddleback butterflyfish (Chaetodon ephippium), Hawaii.

Doug Perrine / Saddleback butterflyfish (Chaetodon ephippium) pair, swimming over reef, North Kona, Hawaii, Pacific Ocean.

Georgette Douwma / RF - Composite image of tropical reef fish on a black background, Rusty parrotfish (Scarus ferrugineus), Striped surgeonfish (Acanthurus lineatus), Saddleback butterflyfish (Chaetodon falcula), Seahor...

Georgette Douwma / Butterflyfish composite image on black background, Orange face butterflyfish (Chaetodon larvatus), Red Sea Eritrean butterflyfish (Chaetodon paucifasciatus), Redtail butterflyfish (Chaetodon collare),...

Georgette Douwma / Yellow tropical reef fish composite image on black background, Falcula butterflyfish (Chaetodon falcula), Yellow boxfish (Ostracion cubicus), Golden butterflyfish (Chaetodon semilarvatus), Red Sea clo...

Georgette Douwma / Yellow tropical reef fish composite image on black background, Sailfin tang (Zebrasoma veliferum) juvenile, Pajama cardinalfish (Sphaeramia nematoptera), Three-spot angelfish (Apolemichthys trimaculat...

David Fleetham / Saddleback butterflyfish (Chaetodon ephippium) portrait, Fiji.