The troubles of artificially creating an ecological catastrophe will be punished by God!

Qi Jingtao smiled slightly, and said: "Uncle Zhang, don't worry, that kind of bait is very troublesome to prepare, it's okay to supply a small amount to your family for your own use, and if you have more, you'll be embarrassed to ask for it." If your family wants to raise fish fry and release them into the lake, you can ask that friend for more nutrient solution. Hehe, if you catch 10,000 or 20,000 lake fish a year, and cultivate and stockpile tens of millions of fish fry to supplement them, we can fish from the lake with peace of mind, right?"

"By the way, we will return it a hundred times and a thousand times and give back to Xingyun Lake. Otherwise, I'm really upset. Lao Zhang understood and seemed to understand Qi Jingtao's thoughts.

"Uncle Zhang, big-headed fish belong to the carp family, can your fish pond breed large-headed fish fry?" Qi Jingtao went straight in, indicating that he wanted to artificially breed free-range fish species.

"What's so difficult to cultivate, the wetlands in our old estuary were originally the places where big-headed fish spawn and where fish fry grow. If it weren't for the kind of whitebait that loves to eat fish eggs in the lake, where would it be necessary to artificially breed fish fry and release them into the lake? We can't keep big fish in those fish ponds, most of them are used to breed yearling and second-yearling fish, and provide fry for those farmers.

Carp begin to spawn in batches in February ~ March every year. It reaches its climax in late spring and early summer. During the breeding season, the water temperature in the spawning grounds is generally above 18°C, and the optimal water temperature is 25±3°C. Generally, when the river flow rate reaches more than 1~1.5m/s during the wet season, the peak of fish spawning will be formed.

Carp lay sticky eggs: the specific gravity of the eggs is greater than that of water, and the outer layer of the egg membrane is sticky when exposed to water, and the eggs can adhere to substrates such as aquatic weeds or pebbles after they are laid. In summer, when the temperature is high, it is the season for carp to spawn, and this is also a good time for carp fishing when they come in schools from deep water to places where there are aquatic weeds on the shore to feed and spawn. Carp can spawn on their own without artificial reproduction.

During the spawning season of fish in the lake, we have to pick up a large number of aquatic plants with fish eggs from the lake and put them into the pond, and use the wild fish eggs to hatch the fry. There are a lot of big-headed fish fry mixed in there. However, after the big-headed fish fry leave the lake area, they are basically unable to survive in those artificial ponds.

And the fry of the big-headed fish are indistinguishable from the fry of the common carp, if those fry are not sold for money. Every year, it only needs to grow from fish flowers to one-year-old fish, and then release them directly into the lake. Hehe, it's really not that difficult. Lao Zhang gushed about the purpose of their lakeside fish ponds.

Since the arrival of silverfish in large numbers, the indigenous wild fish species of several plateau lakes in central Yunnan have suffered. In particular, the big-headed fish unique to Xingyun Lake and the wave-resistant fish unique to Fuxian Lake have now become scarce and scarce.

Qi Jingtao clearly got that when he was in high school, he and his father came to Uncle Zhang's house to play, and there were still a lot of big-headed fish in Xingyun Lake at that time. The catch on those days of the annual fishing festival can account for more than half of the production of big-headed fish. Bighead fish is the main fish in Xingyun Lake, and it is a well-known specialty fish.

Since ancient times, even the people of Jiangchuan have been jokingly called Jiangchuan big-headed fish by the Caiyun people, and the locals are jokingly called by local specialties. There are many people who have heard, seen, and eaten big-headed fish. What does it mean when you come to Jiangchuan and you can't eat or see big-headed fish? Is Jiangchuan big-headed fish still Jiangchuan big-headed fish?

The specialty of Fuxian Lake next door, and it is the unique characteristic of Fuxian Lake, the wave-resistant fish, which has only become a rare species in recent years. In previous years, whenever the wave-resistant fish fishing season. Go to the fish caves on the shore of Fuxian Lake to catch anti-wave fish, and eat the copper pot to cook live fish is a festival for people in central Yunnan and even around central Yunnan. Tourists go to the lake to eat the famous copper pot boiled live fish, and what they eat is the special anti-wave fish of Fuxian Lake.

Although the anti-wave fish is small, it has soft spines and tender flesh, and it is delicious. Because it lives in clean water and lives on plankton in the water, it has a clean belly, so it does not need to be disemboweled. According to the characteristics of wave-resistant fish, there is a peculiar way of eating.

The living habits of the anti-wave fish have a strong mysterious color, and the anti-wave fish like this relatively cool mountain spring water. The period from the beginning of the Spring Festival to the beginning of the autumn festival is its fish flood season, which is called the fish season by the locals. Wave-resistant fish lay their eggs in their holes, and their eggs are semi-sticky and must be attached to sand, rocks, and reefs, which is the case on the shores of lakes.

The local fishermen use wooden water wheels to drive the spring water out of the stone cave spring shaded by green trees, and flow into the lake through the ditch, the temperature difference and flow rate between the spring and the lake water just cater to the living habits of the wave-resistant fish who are competitive and like clear water, and the fish will gather to grab the water, drill the bamboo cages that the fishermen have placed in the flowing water ditch in advance and be caught, this fishing method has been followed through the generations, ancient and unique, people call it "car water fishing".

In the fish flood season, each fish hole can catch hundreds of catties of fish every day. At the peak of the fish flood, the anti-wave fish will automatically ovulate on the sand and gravel in the shallow water area of the lake shore in a swarm, and the fishermen will open a sand ditch more than 1 meter wide, several meters long and more than 30 centimeters deep on the slope beach along the shore of the lake, and the bottom will stretch straight into the lake, and the ditch will use small stones to build a horizontal grid, which is shaped like the "fence" used by fishermen to dry fish, and then use a wooden waterwheel to drive water from the lake at the other end of the ditch, and then flow into the lake through the ditch (called the water hole). At this time, the fish in the lake will grab the water from the other end of the ditch along the sand, and when there are more fish in the ditch, the traffic will be stopped immediately, and the remaining water will seep out from the sand and gravel, and the fish will stay in the ditch to be caught, this fishing method is called "fence ditch fishing".

At that time, they were all fished in on-site water, and they went there to eat boiled live fish regardless of the pound of sales, according to the per capita calculation, five yuan of soft girl paper per person, so that you can eat enough, eat enough. Where is it like now, the wave-fighting fish get hundreds of thousands of yuan a kilogram, and you can't see it.

It is said that the other two indigenous native fish species in the four major plateau lakes of Caiyun, the bow fish of Erhai Lake and the golden thread fish of Dianchi Lake, also face the same situation.

The unique fish in these plateau lakes in Caiyun turned out to be the famous local high-yielding fish, which is not only unique, but also has very high economic value, and is not the kind of species that is not used in the middle.

In addition to the golden-threaded fish in Dianchi Lake, due to the eutrophication of the water quality of Dianchi Lake, it has become inferior and five types of water are on the verge of extinction in Dianchi Lake. Fortunately, the Dianchi Lake basin is open, and those direct currents can also provide a refuge for the goldenrod, which has not completely disappeared.

The other three species of special fish are still in their native habitat. It's just that the eggs are devoured by other fish in large quantities, and the juveniles are difficult to produce and survive, and there is still room for rescue.