All the lobsters we can eat at ordinary times belong to the "animal kingdom >; Arthropoda >: Soft beetle > Full of eyes ",further down is the main difference. Generally, the Australian lobsters and California lobsters you see belong to the "Acanthopoda >: Lobster family ",so strictly speaking, they are lobsters. While Maine lobster and freshwater lobster belong to "crayfish suborder >: Crayfish/Crayfish ",their scientific name should be Crayfish/Crayfish. Crayfish is often regarded as a kind of lobster because it is similar in size to lobster and both of them can be eaten. And in scientific classification:

Lobster has long, thick and spiny antennae, while crayfish has thinner and shorter antennae.

Crayfish has a pair of big claws (pliers), while lobster has no claws.

Crayfish is actually a small close relative of sea crayfish living in fresh water, but it is separated from the real lobster by a little distance.

Cooking lobster:

From the food point of view, the main meat of Lobster Tail in the waist and tail, so many restaurants sell lobsters with only the lower body. However, the pincers of crayfish are very big, so apart from the tail accident, the pincer meat is very sweet. In addition to steaming the whole lobster, Americans often sell the tail of Maine lobster at a high price (for example, Surf and Turf in the steakhouse is steak+lobster tail), and then cook the pliers meat and cut it into pieces, mix it with Menez and eat it in bread (the famous Lobster Roll in New England).

In Asian practice, fresh Australian lobster can be made into sashimi to eat, while Maine lobster is not suitable. In addition, steamed, ginger, onion, salt and pepper, spicy are also common lobster cooking methods.

Crawfish, on the other hand, is slightly fishy because it grew up in fresh water and swamps. Therefore, whether it is cooked or fried, add some pepper or other spices to suppress the smell.

Australian lobster

Ordinary lobster

Australian lobster culture series:

Suitable growth rate

Australian lobsters are naturally distributed in subtropical and tropical regions. Good growth rate can be achieved between18℃ and 32℃. The annual water temperature in Oceania is higher than11month for six and a half months. Normal growth can begin when the water temperature reaches 16℃. In order to make full use of local heat energy resources, the release time of Australian lobster in Oceania should be arranged in early May, and the catching time should be 1 1 late month.

Stocking technology and daily management

(1) Density: 600 young shrimps of 2-3 cm per mu can be mixed with silver carp 100, 50 silver carp and 50 grass carp. ② Micro-flow aquaculture or adding fresh water 2-3 times a week. ③ Feeding should be fixed-point, fixed-time, qualitative and quantitative, and the feeding types should be as diverse as possible, such as water hyacinth, water hyacinth, floating celery and other aquatic plants, cow dung, pig manure and artificial pellet feed. Animal erbium materials such as snails, earthworms and mussels can also be properly fed. Feed the fermented cow dung 1 time every week, 0/00 kg per mu/kloc-0, and put it in the four corners of the pond, completely submerged. Feed the granular feed 1 time every day, and at 6 o'clock in the evening, 20% of the shrimp weight can be used. ④ During the high temperature period in summer, attention should be paid to increasing the amount of running water or water injection and the times of water injection, and the aerator can be turned on at night to increase oxygen.

Pond condition

① The pond should be rectangular, with unlimited area, but 2-5 mu is better, with a water depth of 0.9-1.5 m, and the long axis direction of the pond should be the same as the wind direction in summer. (2) the bottom of the pool is hard and free of silt, and the wall of the pool must have a slope, and the slope should be greater than 3:1. (3) The pond should have a good irrigation and drainage system, with water entering from the upper part of one end and draining from the bottom of the pond at the other end, and the water inlet and outlet should be provided with a net cover to prevent enemy damage and escape. ④ There should be a submerged plant area at the bottom of the pond with an area of about 1/5, and there should be enough artificial hidden objects, such as waste tires, nets, PVC pipes, waste crocks, bamboo rafts, etc. ⑤ Conditional ponds can be equipped with aerators.

Water quality requirements

(1) water source, mainly with unpolluted rivers, lakes, reservoirs and other large water surface water as water source. Groundwater can also be used, which has the following advantages: there is a fixed independent water source; Wild miscellaneous fish without pathogens. There is no pollution. The temperature is relatively stable throughout the year. (2) The pH value of water has been the lowest value of 6. 10, and the highest value of 9.33 can survive, but it is better to be 6.5-9.0, and it is best to be neutral and alkaline. (3) Dissolved oxygen in water. Although Australian lobster can survive for a short time with low oxygen tolerance and dissolved oxygen below 1 mg/L, if it is in a low dissolved oxygen state for a long time, its growth and survival rate will be affected. Therefore, if necessary, an aerator or other aerating equipment should be equipped in the pond to keep the dissolved oxygen above 4 mg/L, so as to avoid the pollution of heavy metals, pesticides, herbicides, oil, chlorine, methane, argon sulfide and high iron content. ④ The growth of lobsters can be promoted by adopting micro-running water or adding fresh water regularly.