Shane Gross / Invasive Lionfish (Pterois volitans) which have taken over and are wiping out native fish in the Atlantic ocean. The highest densities are in the northern gulf of Mexico. Destin, Florida, USA.

Shane Gross / Invasive Lionfish (Pterois volitans) which have taken over and are wiping out native fish in the Atlantic ocean. The highest densities are in the northern gulf of Mexico. Destin, Florida, USA.

Tim Fitzharris / Butterflyfish (Chaetodon sp) and Sergeant Major Damselfish (Abudefduf saxatilis) school, Negros Oriental, Philippines

David Fleetham / Philippine reef scene with butterflyfish. Balicasag Island is a flat island four kilometers southwest of Duljo Point off what is known as Pangalo Reef in the Philippines. (Four photographs were digita...

David Fleetham / Schooling Lemon / Milletseed butterflyfish (Chaetodon miliaris) below kayakers off Maui, Hawaii.

David Fleetham / Schooling Lemon butterflyfish (Chaetodon miliaris) near to surface. Maui, Hawaii.

David Fleetham / Looking upwards to schooling Lemon butterflyfish (Chaetodon miliaris) near to surface. Maui, Hawaii.

Tim Fitzharris / Green Sea Turtle (Chelonia mydas) swimming with a school of butterfly fish, Apo Island, Philippines

Fred Bavendam / Eyepatch Butterflyfish (Chaetodon adiergastos) school, Bali, Indonesia

Pete Oxford / Butterfly peacock bass (Cichla ocellaris) in permanent freshwater pond, savannah, Rupununi, Guyana

Michel Roggo / Butterfly peacock bass (Cichla ocellaris) in flooded forest, Rio Tabajos, Amazon, Brazil.

Fred Bavendam / Butterfly Perch (Caesioperca lepidoptera) group swimming around two sponges, Tasmania, Australia