Recently, some people have talked a lot about "indoor circulating water and fresh water to raise prawns" in many videos. Some people have raised their own prawns for several years and have some experience to share, while others are simply for the sake of Xiao Bai who doesn't know how to do routine. In terms of difficulty, indoor cultivation of cement ponds, canvas ponds, plastic buckets, etc. is the most difficult. If there is no circulating water equipment in this mode, it is difficult to increase the density, and indoor cultivation without output is meaningless. Moreover, fresh water and seawater are different, and fresh water cultivation and circulating water equipment may not be successful.
Therefore, people who are interested in shrimp culture should not touch indoor circulating freshwater shrimp culture easily. This difficulty is simply hell-class. They don't have enough financial strength, enough endurance and strong learning ability. Never touch it. Some people are sharing indoor circulating aquaculture with good intentions and want to share practical experience, but some people are in the form of companies joining, and their ultimate goal is to sell things. Many companies or 99.99% joining companies are liars, so the probability of being cheated in shrimp farming is very high.
The difference between metapenaeus ensis and prawn:
First, the varieties are different
1, metapenaeus ensis
The scientific name is Neopenaeus monodon, commonly known as tiger shrimp and red claw shrimp.
2. Shrimp
The scientific name is Penaeus orientalis, also known as Penaeus orientalis, freshwater shrimp and yellow shrimp.
Second, the shell is different
1, metapenaeus ensis
The shell is hard, the body has obvious yellow-red stripes, and the body is covered with dense light brown spots.
2. Shrimp
The shell is thin, with thorns on his forehead and no obvious stripes and spots on his body.
Third, the shape is different
1, metapenaeus ensis
The male's frontal angle is straight and sharp knife-shaped, and the female's end is slightly bent upward. The male copulator has a sharp tip, a wide base, a slightly triangular ventral surface, and the anterior and middle processes of the female copulator are nearly long.
2. Shrimp
The shrimp body is long and cylindrical, with flat left and right sides, long abdomen and developed muscles.
Fourth, the head is different
1, metapenaeus ensis
After maturity, the body length is about10 ~15.5 cm, and the weight is about 7 grams. The proportion of sexual maturity increases with the growth of body length.
2. Shrimp
Body length16 ~ 22 cm (up to 30 cm for larger ones) and weight of 30 ~ 80 g (up to half a catty for larger ones), and the female shrimp is generally larger than the male shrimp.
5. Different colors
1, metapenaeus ensis
The body color is khaki to brown, and the swimming feet are brown or red.
2. Shrimp
The female shrimp is gray-blue, while the male shrimp is yellow.
Sixth, the taste is different
1, metapenaeus ensis
Thin shell and fat meat, tender meat, suitable for boiled, soup, barbecue and so on.
2. Shrimp
The meat is tight and elastic, chewy, and suitable for salt baking, oil stewing, barbecue, frying and so on.