1, difference of origin
Crayfish is the kind of red crayfish that is often said. Not as big as lobster, mainly produced in China. At present, there are aquaculture in Fujian, Guangdong, Guangxi, Jiangxi, Hubei, Anhui, Zhejiang and other places in China, and crayfish like to grow in shallow rivers, while lobsters are relatively large and mainly live in the sea. Now it is distributed in Central and South America, Mexico and Zhoushan, Zhejiang, and there is not much artificial culture.
2, the shape difference
Crayfish shells are hard and dark red, and stripes usually appear on the back. Young shrimps are gray and have long claws, while lobsters are red, big, with thick shells and clear lines.
3. Differences in living habits
Crayfish has strong adaptability, lives in the environment of 10-30℃, and likes to eat some plankton, which can help crayfish fatten quickly. Lobsters mostly live in seawater, with large size, fast action, hypoxia tolerance, like to eat zooplankton and bait, and high yield.
Techniques for raising crayfish;
1, scientific and reasonable fishing
Lobster fishing must be decided according to the stocking season, and it can be caught in June-July and11-65438+February every year. You can also catch large lobsters that meet the market specifications first, and then continue to put in new lobsters, so that lobsters can be caught all year round.
2. Make a breeding plan in advance.
If wild lobster species are introduced, they must be domesticated for a period of time before they can be released. Generally, the first year of crayfish culture is mainly to do a good job of breeding. Generally, shrimp seedlings are raised in summer, and lobsters that grew up in the early stage are mainly stocked in autumn, winter and spring.