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Pike belongs to the order Salmoniformes, the family Pigoidae, the genus Pike. i.e. pike. Commonly known as:
Dogfish, duck fish. English name: pikes, amur pikc.
Pike is a freshwater fish that is widely distributed in the cold and temperate zones of the Northern Hemisphere. The mouth is large and flattened like a duck's beak, and the jaw is prominent. It is the most brutal carnivorous fish in freshwater, and will attack frogs, rats, and wild ducks in addition to other fish.
It is said that you can eat food equivalent to your weight in one day. Because of their long lifespan, large individuals can occasionally be found. Because of its excellent meat taste, it is a good target for fishing.
Pike is the only genus of the salmoniformes pike suborder Pikeidae. 5 species, 2 subspecies; There are 2 species in China, namely pike and pike. body elongated, slightly flattened; The mouth fissure is extremely wide, about half the length of the head; well-developed teeth; dorsal and anal fins posterior and opposite; There are spots on the sides of the body.
Dogfish grows fast, the meat is delicate and white, and the taste is delicious, so it is a good edible economic fish. However, because the pike is carnivorous, gluttonous and eats a large amount, it is very harmful to other economic fish.
Dogfish has the longest lifespan, can live for more than 200 years, and can be called the "old birthday star" among fish. The body of the pike is slender and can reach more than a meter. The snout is prominent, and the caudal fin is forked.
Mouth canine teeth, **fierce, devouring other fish and aquatic animals. This species is a cold-water fish that is found in the cold regions of the Northern Hemisphere. The long life span of the pike has a certain relationship with the fact that it lives in cold regions.
There are 8 species of pike, and there is only one species in China, which is distributed in Heilongjiang, Songhua River, Ussuri River and other places. The meat of this fish is very delicious and is a favorite food of the people.
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<> fish can live up to about 100 years. The lifespan of this animal is generally related to the size of the individual, and the larger its size, the later it will become sexually mature and the longer it will live. Usually most of the fish do not have a long lifespan, concentrated between 2-20 years, no more than 10% of the fish can live for more than 30 years, and only 5% of the fish below 2 years, among the ornamental fish, the arowana is relatively long-lived, and the silver dragon can live for about 50 years.
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Usually most fish do not have a long lifespan, concentrated between 2-20 years.
The length of their lifespan also has a lot to do with the environment in which they live, for example, pet fish have a longer lifespan. Like the common goldfish, the lifespan is generally 6 to 7 years, and its lifespan is closely related to its breeding environment, conditions and fish physique.
If the breeding conditions are good, the life span of goldfish can reach 8 9 years, and with scientific and reasonable feeding methods, it can even reach 10 years. While the lifespan of the arowana is about 30 years, the lifespan of the koi is about 70 years, and the longest-lived fish can live to be more than 100 years old.
In 2020, humans discovered a 400-year-old Greenland sleeping shark in the Arctic Ocean. It has been wandering at sea since 1627, and according to the aforementioned year, the shark was born in the Ming Dynasty of China, and it may have been born at a time when Wei Zhongxian was still in power, and calculus had not yet been invented.
Precautions for fish farming:
1. You need to pay attention to water quality. Different fish have different requirements for the pH and hardness of the water body, so it is necessary to pay attention to regulation, some like weak acidity, and some like weak alkaline.
2. Fluctuations in water quality must be avoided, which will lead to stress reactions in fish and death in severe cases.
3. Fish have requirements for water temperature, and some wide-temperature fish, although they have a wide range of adaptation, it is best to keep the water warm, usually between 20-30.
4. Fish farming must pay attention to feeding Wang group food, according to the different eating habits of the fish, it is also very important to choose the right feed, otherwise it will lead to unbalanced nutrition, so that the life is not long.
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