I. Is grouper a freshwater fish?
Grouper has sea fish and freshwater fish.
Grouper mostly inhabits the tropical and temperate oceans, preferring to inhabit in the coastal islands near the rocky reefs, gravel, coral reef substrate of the sea area, generally not in groups, the habitat of the water layer with the water temperature changes and rise and fall.
Freshwater grouper can grow in freshwater, but also in seawater with a salinity of 10 or less.
And there is also a native grouper with a relatively small body size in the Minjiang River system, Yangtze River tributaries and other rivers in western China.
2. What kinds of grouper are there?
1, point with grouper point with grouper is a tropical middle and lower fish, like inhabiting the rocky bottom sea area, ferocious, like to eat fish, shrimp, crabs, etc., kill each other when they are hungry, can live in the salinity of 11 ~ 41 waters, distributed in China's East China Sea, the South China Sea and other waters.
2, reddish grouper reddish grouper is warm-water middle and lower fish, adult fish feeding on fish, shrimp, crabs, hermaphrodites, females first mature, now artificial reproduction, distributed in China, Taiwan, the East China Sea, the South China Sea, as well as India and Japan.
3, green grouper green grouper is warm water in the middle and lower fish, baby fish ingest plankton, adult fish ingest fish, shrimp, crabs, etc., female and male homozygous, for China and Southeast Asia shallow sea aquaculture objects, distributed in China, Taiwan, the East China Sea, the South China Sea and Japan.
4, oblique banded grouper oblique banded grouper for wide salt fish, mainly distributed in the Red Sea, often inhabiting the mainland coast and large islands, but also found in estuaries, offshore 100 meters deep in the waters.
5, freshwater grouper freshwater grouper native to Central America, introduced into Taiwan in 1988, for the southern region of Taiwan's common freshwater aquaculture species, in 1996, Guangdong, Jiangxi breeding units introduced from Taiwan, and in 1999, introduced into the Jinan Freshwater Aquaculture Scientific Research Institute.
Three, freshwater grouper farming notes
1, a small amount of mixed culture: freshwater grouper can be mixed in a small amount of ponds, mixed culture of freshwater grouper per acre of water surface of 25 to 50 or so, after half a year of time, the average weight of up to 300 grams or more, after a year of time, the weight of up to about 500 grams of culture.
2, pond main culture: freshwater grouper can be mixed with tilapia, grass carp, crucian carp, etc., 150 to 200 tails per mu of water surface, 300 tails of mixed fish, after half a year of breeding the average weight of up to 200 grams or so, after a year of breeding weight of up to 250 grams or more.