Nowadays, many middle-aged people especially like fishing. On the one hand, fishing can help middle-aged people get rid of stress, thus relieving nervous mood. On the other hand, fishing can make middle-aged people get bait, which perfectly conforms to the true meaning of fishing. A small number of mandarin fish appeared in the Yangtze River valley, and each person got a mandarin fish of 68 kg.
Except for China, catfish weighing nearly 300 kilograms appear in the Mekong River basin, and different kinds of fish live in different basins, thus creating a rich river ecosystem in the world. Because there are differences in nutrients and ecosystems in each river basin, fish with different weights will appear in each river.
At one time, many people found catfish weighing 100 kg in the Mekong River basin. With the vigorous development of fishing, free anglers and professional fishermen began to set a new record for the heaviest fish in the Mekong River basin. A record-keeping catfish weighs 283 kilograms, which is difficult for ordinary people to salvage.
Coincidentally, carp appear in many river basins in the United States. Due to the lack of natural enemies of Asian carp in the local area, it is the premise of rapid propagation of Asian carp. Therefore, the local government began to encourage ordinary people to salvage Asian carp. The most remarkable achievement is that many Americans have salvaged Asian carp weighing 20 kilograms, which is in sharp contrast to the heaviest Asian carp in many Asian countries.
Generally speaking, the growth environment and food source of fish are closely related to the weight of each fish. If some fish live in an environment without natural enemies, they can easily get very rich food. Over time, some fish in the whole river got a favorable environment for growth, and eventually grew into ultra-high-weight freshwater fish unexpected by netizens.