1, different families and genera
Molas belong to the freshwater fish of Molas family; Tilapia belongs to the genus Tilapia, a tropical fish.
2, the appearance is different
Sunfish are brightly colored. There are many different patterns on them. For example, the patterns on their bellies and heads are generally orange, while the patterns on their backs are blue-gray and some molas are gray-black. There is a soft black film on the gill cover of overturned fish, which looks like ears; The color of tilapia is relatively simple, only brown and gray, and the overall color is not bright. There is no soft membrane behind the gill cover of tilapia.
3. Different countries of origin
Mola fish originated in America and mainly distributed in the United States, Mexico and Canada. The origin of tilapia is Africa, mainly distributed near the equator.
Cultivation method of tilapia
1, build a pond
In tilapia farming, a pond with an area of 5 mu and a depth of 2 meters should be built in a place far away from pollution sources and convenient for irrigation and drainage. The bottom and wall of the pond should be covered with plastic film to prevent water seepage, and the pond should be disinfected with quicklime before use to avoid infecting germs.
2. Select seedlings and put them in.
In tilapia farming, 3 cm fry should be selected and put into the pond in sunny morning. Three hours before being put into the pond, fry were soaked in water containing anti-stress drugs to relieve their stress reaction, and then put into the pond at a density of 654.38+ million per mu.
3. Feeding methods
Tilapia mainly feeds on plankton in the water, which can be fed twice a day during the breeding period. Concentrated feed such as bean cake, rapeseed cake, wheat bran and soybean paste residue is mainly used to promote its growth. It is also necessary to sprinkle green manure and human and animal manure into the pond to cultivate plankton for tilapia to eat.