First, the species of fish. Some fish are very active and have a wide range of activities. When fishing this kind of fish, the nesting time is relatively short, such as grass carp, crucian carp and fish. Some fish are lazy, swim slowly and have a small range of activities, so it takes a long time to catch this kind of fish, such as herring, which is called scholar fish.

Second, the size of the fish. Generally speaking, the smaller the fish, the more active it is. The bigger the fish, the slower it swims. So it takes a short time to build a nest for small and medium-sized fish, and a long time to build a nest for large fish.

Third, the number of fish. Fishing friends often say that "resources decide everything", which is a famous saying in the fishing industry. As long as there are enough fish in the water, nothing else is a problem. The more fish near the nest, the faster the nesting speed. On the contrary, the fewer fish, the slower the nesting speed.

Fourth, fishing places. Black hole and wild fishing are two forms of fishing at present, which are mainly distinguished according to different fishing locations. The black pit has a small area, a fixed water surface size and a standard shape. Fish are concentrated in small black pits, and after nesting, the nesting speed is faster. Wild fishing is full of uncertainty, and the size and shape of the water surface are not fixed, so it is difficult to locate the fish, so the nesting time is generally longer than that of the black pit.

5. Seasonal changes. In summer, the temperature is high, the fish is full of vitality and the nesting speed is fast; In winter, the temperature is low, the vitality of fish is poor, and the nesting speed is slow. The weather is unstable in spring and autumn, and the temperature sometimes fluctuates greatly, which affects the nesting time, leading to great changes in nesting time, sometimes short and sometimes long.