Tilapia, commonly known as: African crucian carp, non-crucian carp, Vietnamese fish, Nanyang crucian carp and so on. Originally used in Mozambique as a model of origin of the mouth of non-crucian carp fish species: Mozambique overeating non-crucian carp (scientific name: Oreochromis mossambicus), is now the cichlid fishes and non-crucian carp and non-crucian carp and other species of fish Commonly known; English referred to as Tilapia. It is now one of the major sources of future animal protein in freshwater aquaculture fish, which is the focus of scientific research in the world aquaculture. Usually live in fresh water, can also live in different salt content of salt water, can also survive in the lake, river, pond shallow water. It has a strong ability to adapt, in the area of small waters can also reproduce, and even in the rice field to grow, and less dissolved oxygen water has a strong adaptability. Most of the tilapia is omnivorous, eat the plants and debris in the water.