CATDOLL : CATDOLL: What are the standards for catching fish? How to catch freshwater shrimp?

1. What are the standards for catching fish?

The fish fishing standards will be officially implemented from August 1, 2018, based on the Ministry of Agriculture and Rural Affairs' announcement on the implementation of minimum catchable standards and juvenile fish ratio management regulations for 15 important economic fish species including hairtail.

In 2018, 2019 and 2020, the weight of juvenile fish of a fish species in the catch of a single voyage shall not exceed 50%, 30% and 20% of the total weight of the species, respectively. After 2020, the 2020 requirements shall apply.

2. How to catch freshwater shrimp?

There are many ways to catch freshwater crayfish. They can be caught with shrimp cages, ground cage nets, hand nets, shrimp traps and other tools, or they can be caught with fishing rods or drag nets, and finally caught in dry ponds. From mid-March to early July, shrimp cages and ground cage nets are used for catching, which has a better effect. There are various styles of shrimp cages and ground cages. The common ones in my country are closed soft pool cages made of mesh and closed small shrimp cages made of bamboo. Crayfish cannot come out after entering through the entrance, and the slipknot must be manually untied to open the opening and pour the crayfish out. The United States often uses metal mesh to make open shrimp cages. The circular opening of the shrimp cage is made of smooth plastic, which is exposed to the water. Freshwater crayfish that enter the shrimp cage cannot climb out of the smooth plastic opening. Shrimp cages of different sizes can catch crayfish of different sizes. When harvesting, the shrimp catcher only needs to lift the shrimp cage out of the water and pour the crayfish into the container.

As for bait, just feed it the kind that scares people.

3. What fish can be caught in the Bering Sea?

Alaskan whitefish spend their entire lives in the deep sea and never come to fresh water. Alaskan wild whitefish, which always live in the deep, clear, cold waters of the Gulf of Alaska or the Bering Sea, have become part of the natural ecosystem. At different stages of their growth, they catch plankton, shrimp, shellfish, fish and marine organisms, but they themselves are also preyed upon by larger fish, birds or mammals.

4. Freshwater fish that eat shrimp?

Tilapia is omnivorous and often eats aquatic plants and shrimps; salmon eats plankton, insect larvae, shrimps and small fish; bream is an omnivorous fish and eats both meat and vegetables; black carp is a carnivorous fish and mainly eats small fish and shrimps; map fish is omnivorous and eats small fish, shrimps, etc.; arowana is omnivorous and eats shrimps, blood worms, feed, etc.; arowana eats animal feed, small fish, shrimps, etc.; crown mullet is omnivorous and eats dry feed, shrimps, etc.; red-tailed crown mullet is a carnivorous fish and likes to eat small fish, shrimps, mealworms, etc.; longspined fish is omnivorous and mainly eats small benthic animals, shrimps, small aquatic insects and some invertebrates.

5. Freshwater fish?

Mullet, silver carp, carp, grass carp, dace, crucian carp, sturgeon, etc. are all freshwater fish.

6. Can a yacht apply for a fish fishing license?

Can yachts apply for fish fishing licenses?

The yacht driver's license is different from driving and fishing boats. The maritime department trains the drivers for yacht driver's licenses, and the licenses are issued after the drivers pass the training. Only then can they drive yachts. However, fishing boats go out to sea to fish, and the operation process is completely different from driving a yacht. Therefore, a yacht driver's license cannot be used to drive a fishing boat out to sea to fish.

7. What is the tallest freshwater fish?

The world's tallest freshwater fish is a relative of the lake sturgeon, the European sturgeon.

The European sturgeon is a member of the Acipenser family, just like the lake sturgeon, but the lake sturgeon is a genus of Acipenser, while the European sturgeon is a genus of Acipenser. The European sturgeon is mainly distributed in the Black Sea, the Sea of ​​Azov and the Caspian Sea (which is a lake) at the junction of Asia and Europe, as well as in the rivers that flow into them.

The adult European sturgeon can reach a length of 6 meters and weigh 1 ton. According to the records of the Pan-European Sturgeon Action Plan compiled by the World Sturgeon Conservation Society and the World Wildlife Fund, the largest European sturgeon can even grow to 8 meters long and weigh an astonishing 2.2 tons!

European sturgeons also have a long lifespan, and like lake sturgeons, can live to be over 100 years old. Unlike humans, who stop growing after adulthood, European sturgeons can continue to grow, which may be why they can grow so large.

8. Fish that have high requirements for fresh water?

A: Such as trout, sturgeon, bass, knife fish, mandarin fish, stream grouper, etc.

Freshwater fish. Belongs to the genus Salmonidae. There are about six or seven species in the world, three of which, namely rainbow trout, cutthroat trout and Atlantic salmon, are native to Canada; the other two, namely brown trout and golden trout, have also been introduced to Canada. Unlike other salmonid fish, trout have black spots on their heads and bodies, and 7 to 12 fin spines on their tail fins. Except for the golden trout native to California, which only lives in small high-altitude lakes in western Alberta, all other trout species have both marine and freshwater forms.

9. Which fish are suitable for freshwater farming in the north?

The following freshwater fish species are suitable for breeding in northern China

1. Carp Carp is one of the common freshwater fish in the north. They are often found in soft mud bottoms and waters with ditches, slopes, branches, rocks and other places where it is easy to hide or forage. Carp is an omnivorous fish and mainly feeds on vegetarian food. Fresh corn kernels and bran can be used as bait. Additives should mainly be fish meal, shrimp meal, silkworm meal, etc. with fishy smell.

2. White Stripe White Stripe is a primary freshwater fish. It has high requirements for water quality and reproduces quickly. This fish is similar in appearance to the horse mouth and the black bass. White Stripe likes fishy food and is a common fish at low altitudes. It likes to live in groups in the upper water layer of streams, lakes and reservoirs, and the depth of its habitat is generally 0 to 10 meters.

3. The scientific name of the Cockroach is Erythroculter ilishaeformis. It is large and slender. It is a large freshwater economic fish in the middle and upper layers. It moves quickly, is good at jumping, has a violent temperament, and is easily frightened. It grows rapidly and is a ferocious carnivorous fish that feeds mainly on live fish. The Cockroach can grow to the size of a meter and is very large.

4. Crucian carp is one of the common freshwater fish in the north. It grows in small rivers with stable water flow and abundant aquatic plants and plankton.

10. Freshwater herbivorous fish?

Answer: Grass carp

Grass carp, an animal of the genus Grass Carp in the family Cyprinidae of the order Cypriniformes, is included in the "List of Key Protected Economic Aquatic Animal and Plant Resources of China (First Batch)".

It has an elongated body, with a cylindrical front, a flat tail, a round abdomen, and no abdominal ridges. It has a wide, medium-sized head, a slightly flat front, a short and blunt snout, and a snout slightly longer than the eye diameter. Its scales are medium-sized and round, with an arc-shaped lateral line in the front and a straight line in the back, extending to the base of the tail fin. It is a herbivorous fish that lives in rivers and lakes in plain areas. This type of animal is distributed in China, Russia, Bulgaria and other countries.