Madagascar's fish species are some of the most threatened on the planet. Habitat loss -- especially the conversion of native vegetation to rice paddies -- combined with erosion resulting from deforestation and the introduction of exotic species have devastated endemic species. Several of Madagascar's unique species are no longer recorded in the wild.
Madagascar is ringed by coral reefs that support a rich diversity of sea life, including fish.
Tilapia in a pond. Tilapia are an introduced species that have done a great deal of harm to aquatic ecosystems in Madagascar. Many native fish species in Madagascar have gone extinct due to tilapia.