Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), adult female eating an invasive species of fish, Western mosquitofish, (Gambusia affinis), Alessandria, Italy, August.

Jean E. Roche / Mosquitofish (Gambusia affinis) female, introduced species to control mosquitos, Camargue, France, June. Biological pest control.

MYN / JP Lawrence / Eastern mosquitofish (Gambusia holbrooki) Oxford, Mississippi, USA, April. Meetyourneighbours.net project

Alex Mustard / Portrait of an Eastern mosquitofish (Gambusia holbrooki) reflected in the surface of Rainbow River, Florida, United States of America.

Alex Mustard / Female Mosquito fish (Gambusia affinis) swimming above weeds, below the surface of Lago Baratz, Sardinia, Italy. This species is originally from the Americas, but has been introduced into many countri...

MYN / Paul Marcellini / Melanistic Mosquitofish (Gambusia affinis holbrooki) Big Cypress National Preserve, Florida, USA, February. meetyourneighbours.net project

Norbert Wu / Pecos Gambusia (Gambusia nobilis) found in spring-fed pools and marshes from Texas to New Mexico

Juan Manuel Borrero / Mosquitofish {Gambusia affinis} Delta del Ebro NP, Catalonia, Spain

Nature Production / Mosquito Fish {Gambusia affinis} laying eggs, Japan