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.

Jussi Murtosaari / Peacock butterfly (Inachis io) newly emerged on asters, Jyvaskyla, Finland, August.

Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.

Silvia Reiche / Peacock Butterfly (Inachis io), Netherlands

Silvia Reiche / Peacock Butterfly (Inachis io), Netherlands

Alex Hyde / Peacock butterfly (Inachis io) basking with open wings on a white background in mobile field studio. Peak District National Park, Derbyshire, UK. August

Jussi Murtosaari / Peacock Butterfly (Inachis io) closeup of wings, South Karelia, southern Finland, September.

Paul Harcourt Davies,Paul Harcourt Davies / Peacock butterfly (Inachis io) resting against a wood shed window, Orvieto, Italy, June

Alex Hyde / Peacock butterfly (Inachis io) and Small tortoiseshell butterflies (Aglais urticae) feeding on Buddleia flowers (Buddleia davidii), Derbyshire, UK, September.

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.