Wanfeng Lake, also known as "Tianshengqiao Reservoir", is located at the junction of Guizhou, Yunnan and Guizhou provinces.
Although Wanfeng Lake is located in a remote area, it is famous in the fishing world, especially now that there are few wild fishing places, Wanfeng Lake has become a wild fishing holy place in the hearts of countless anglers.
However, after a crucian carp from Africa entered Wanfeng Lake, the indigenous fish of Wanfeng Lake, which had a large variety of fish species, suddenly decreased a lot.
The invasive African crucian carp, but there are signs of "anti-guest", anglers feedback: too much, can't catch it, can't eat it!
Wanfeng Lake Reservoir
01
Wild fishing mecca - Wanfeng Lake
Fishing enthusiasts who like wild fishing are all aware of the Wanfeng Lake Reservoir, which is an artificially built storage lake and a national key hydropower project.
The Wanfeng Lake Reservoir covers an area of about 176 square kilometers, which is equivalent to two Dali Erhai Lakes and 76 times that of Hangzhou's West Lake, with a water storage capacity of 10.8 billion cubic meters.
Wanfeng Lake Reservoir not only has beautiful scenery, but also the lake water is crystal clear, like a crystal clear jade, the fish is fat and the water is beautiful, attracting countless anglers to come here to fish every year, and even known as "the paradise of wild anglers".
Wanfeng Lake Fishing Competition
Wild Fishing Paradise
Wanfeng Lake has both a free fishing area and a paid fishing service center, in fact, the fishing environment of the two is basically the same, and they belong to the same water.
The charging place is mainly to provide a relatively comfortable fishing environment, and the fishing positions and fishing platforms are provided by the fishing center, as well as the materials and fishing supplies necessary for life.
At the same time, there is a large parking lot and 1,000 fishing spots to choose from, which is also the largest number of fishing spots in the country.
Wanfeng Lake is inhabited by a large number of wild fish, and the lake is rich in native fish such as silver carp, grass carp, herring, crucian carp, carp, bream, warped mouth, red tail, catfish and so on.
However, the Wanfeng Lake Reservoir, which is rich in fish species, has become less and less angled due to the development and growth of one type of fish.
02
The crushing African crucian carp
In recent years, fewer and fewer fishing enthusiasts have come to Wanfeng Lake to fish, and everyone wonders where have all the big fish in the lake gone?
Many of the people who come to Wanfeng Lake to fish are anglers from all over the country, and they come here to fish wild just to feel the impact of wild fish.
But in fact, the vast majority of people who come here come empty-handed, not because there are no fish in the lake, but because there are countless African crucian carp that cannot be caught, which is simply devastating.
It is understood that the African crucian carp in the Wanfeng Lake reservoir has become more and more difficult to fish due to its continuous expansion of its population, which has led to the decline of indigenous fish.
What's even more outrageous is that as soon as the nest material of the nest lure fish reaches the bottom of the water, it attracts countless African crucian carp, and after a while, the nest material is eaten by them.
When the temperature is high, if you are fishing with pink bait, the African crucian carp will even run to the shore and can't get rid of it!
According to fishing friends, in the past, the fish in the Wanfeng Lake Reservoir were relatively easy to catch, and there was an endless stream of people who came here to fish in the wild, but now most of the fish caught are African crucian carp.
In fact, the larger African crucian carp is also quite enjoyable to catch, but what makes people collapse is that the African crucian carp with a fingernail cover is a large school, too many, and it is impossible to catch it at all, and it is impossible to eat it!
According to the feedback of anglers, after the fingernail-sized African crucian carp enters the nest, there is no way to crack it, so they can only change the fishing position, but it will not be long before they make a comeback.
03
Crazy African crucian carp, which breeds 3 times a year
The origin of African crucian carp is Africa, and its Chinese name is tilapia, also known as southern crucian carp, Vietnamese fish, Fushou fish, etc.
African crucian carp It is a genus of tilapia of the family Lichlidaceae of the order Perch, which belongs to tropical and subtropical fish, which was introduced to the mainland in the 50th century and grows in an artificial breeding environment.
Later, due to natural disasters and man-made release factors, it entered Wanfeng Lake and the southern natural waters of the mainland, and because it is not resistant to low temperatures, there is almost no in the north.
The growth rate of African crucian carp is very fast, and a juvenile of African crucian carp, after a year of growth, can reach sexual maturity and can reproduce again.
The reproductive ability of African crucian carp is incomparable to that of mainland native fish, and it can grow to 350~600 grams a year, of which it can reproduce when it weighs more than 150 grams.
What's even crazier is that in the high temperature season, African crucian carp can lay eggs every 30~50 days, and the number of eggs laid each time is about 1,000.
The hatching rate of African crucian carp eggs is very high, because the male fish has the habit of nesting and protecting their calf, and the eggs are hatched in the mouth of the male, so there are waters for African crucian carp, which will soon be occupied by it.
04
The crazy breeding of African crucian carp has brought harm to Wanfeng Lake
- Grab resources
The aquatic animals that inhabit natural waters are usually relatively balanced, and the existence of each species will not be too much and will not be overflowing.
Because the food source in nature is limited, on the one hand, there is the law of self-survival elimination, and on the other hand, there is resource constraint.
The entry of the alien species African crucian carp will lead to the limited resources in Wanfeng Lake, which will be robbed of some of them, causing difficulties for the growth of native fish.
- Disruption of the ecological balance
Freshwater basins on the mainland, including large reservoirs such as Wanfeng Lake, Wanfo Lake, and Taiping Lake, lack ferocious carnivorous fish.
As a result, after the invasion of fish such as African crucian carp, scavengers, and Egyptian catfish, due to the absence of natural predators, they breed wildly in southern waters such as Wanfeng Lake, breaking the original balance of the ecological environment.
- Curbing the development of indigenous fish stocks
Although the African crucian carp is not a large, ferocious carnivorous fish, it has a very nasty habit of devouring the eggs of other fish.
Every year in April ~ June, it is the breeding period of the native fish in the mainland, during this period, the wild fish that inhabit Wanfeng Lake will swim to the shallow aquatic grass on the shore to mate and spawn.
These eggs have become a delicacy for African crucian carp before they hatch into small fish, and over time, the development of native fish has been destroyed and there are fewer and fewer fish.
At last:
In October 2020, the National Aquatic Wildlife Awareness Month event clearly stated that the alien species African crucian carp (tilapia) is prohibited from being released or abandoned.
To be honest, African crucian carp actually tastes good, not only the meat is delicate, but there are no fine spines in the flesh, and it is rich in a variety of amino acids.
In fact, the big African crucian carp in Wanfeng Lake is very enjoyable to catch, because the African crucian carp has great strength and the feel of walking the fish is first-class.
But then again, fishing and encountering schools of mahjong-sized African crucian carp is a real headache, not only eating everything, but also being extremely greedy, which makes people collapse......