Wild guppies invading the Amazon
Guppies are lovely, but they are also one of the World's most invasive fish species. They live and breed in some 'marginal' habitats, and may get more colourful when they live alongside us in the city...
Guppies are lovely, but they are also one of the World's most invasive fish species. They live and breed in some 'marginal' habitats, and may get more colourful when they live alongside us in the city...