Species invasions are not uncommon in the vast land of our country, especially after the new century, there are many kinds of invasive species, above ground, in water, and endlessly. Today we will talk about a kind of fish in the water, in the southern waters of our country, rampant, where there is water, there is its haunting, even the city's sewage flowing stinky ditch is also dense tilapia.
Tilapia is also known as African crucian carp, crucian carp, Vietnamese fish, Wuguo fish, Fushou fish, anchovies.
Tilapia originally refers to the mouth-hatched non-crucian fish species with Mozambique as the model origin: Mozambique mouth-hatched non-crucian carp (scientific name: Oreochromis mossambicus), now a common colloquial name for several species of fish in the genus non-crucian and oral-hatched non-crucian carp in the family Cinchonale; collectively known in English as Tilapia.
Native to Africa, tilapia is a tropical fish of the genus Tilapia; sunfish are native to south-central America and belong to freshwater fish of the family Sunfish. Body color is different: the color of the sunfish is more, the head and chest to the abdomen are light orange red or light orange yellow, the back is light blue-gray, there are some light gray-black longitudinal stripes, we call it sun non, it is not large, the normal maximum is also two or three or two heavy, it is about four fingers, generally two or three fingers are large or one finger large; and the tilapia is only gray and brown, we call it green tilapia, also called kg non, normal river fishing up have a palm large, sometimes can also catch a larger, one to two pounds or so, There are also three or five pounds, it is relatively high vigilance, not easy to bite the hook, so the catch is very little.
The most annoying thing for anglers to fish in the river is to encounter the sun, they are all in groups under the water to grab food, sometimes the bait just into the water they began to frantically grab food on the surface of the water, and when the fish hook to the bottom of the water, the bait was also robbed. As long as there is sun in the water, there is no way to avoid them, unless you have to wait until night fishing, xiao Luofei is not too noisy at night, that is, there are occasional one or two, night fishing is basically to eat hooks are big Olivi. In fact, the best time to fish for large tilapia is in the summer, especially when there is a big water, in the small river with a large flow, find a place with slow water, use the stuffy rod method to catch earthworms, there is an action is the big tilapia, a fishing a quasi.
Tilapia reproduce very quickly, to know that their reproductive ability is very strong, although a female tilapia can lay eggs 1000 to 1500, the number is not too much, but because their survival rate is very high, coupled with tilapia can hatch fish eggs, this behavior of protecting young for its reproduction is very beneficial, so the survival rate of these eggs is very high. Although it is said to be adapted to temperatures above 15 degrees, below 8 degrees will die, but when the temperature is lower than 8 degrees, as long as there is deep water, it will hide in the deep water area to avoid the cold, especially some waters and underground rivers, they will gather at the mouth of the underground river, or swim directly into the underground river, where the water is warmer. Therefore, even if most of them freeze to death, the small part that survives will multiply rapidly in the coming months.
Especially in South China, in recent years, it is often the warm eastern season, and there are very few tilapia that freeze to death, and it is even more flooded. The reason why we flood into a disaster to compare, because many reservoirs and fish ponds also have their figures, but whenever they appear, they will not be extinguished, and there will be an uncontrollable mass reproduction, and other fish rushing to eat, resulting in other fish populations decreasing, growing slowly. The sun is not the fish that all the fish pond reservoir owners hate, as for how to invade the fish pond reservoir? I asked the owner of the fish pond reservoir, and they said that a large part of them came back with the fry, and it may be that the fish fingerling base has also been invaded by the sun.
Therefore, I call on everyone not to release indiscriminately, in recent years, scavengers, crocodile eels, Brazilian turtles, are all released caused by the flood of species invasion tests, but also damage to the living space of native fish, so that native fish are reduced, our fishing resources are also reduced. Now many anglers complain that there are few fish in the river and it is difficult to catch fish, in addition to the reasons for the electrician's net worker, there is also the invasion of species.