The mango tilapia (Sarotherodon galilaeus) is a species of fish from the cichlid family. Other common names include Galilaea tilapia, Galilee St. Peter’s fish, and St. Peter's fish. This is a relatively large cichlid at up to 41 centimetres (16 in) in length and about 1.6 kilograms (3.5 lb) in weight.