Tilapia

Tilapia, genus of freshwater fish in the cichlidae family. Tilapias are easy to keep in aquariums provided they get space enough. They breed easily and grow fast, but are a danger to any smaller fish. Most of the species are substrate spawners but some are mouthbrooders[?].

Tilapias are sometimes bred for protein. In some regions the fish can be put out in the rice fields when rice is planted, and will have grown to edible size (12-15 cm, 5-6 inches) when the rice is ready for harvest. See also fish farming