shape for digging a fish pond. The best ratio of length to width of the fish pond is 5:3, and it runs from east to west. Its depth is about 1.5-2 meters, and the middle of the bottom is a little higher, while the four sides are a little lower. The whole pond is in the shape of a turtle's back. In addition, fish ponds must be built in places with sufficient water resources, usually to see sunlight, sufficient light time is conducive to the growth and reproduction of plankton, but also allows aquatic plants to carry out photosynthesis.
to raise in fish ponds? 1. Grass carp: It is best to raise grass carp in fish ponds. This kind of fish is widely distributed in our country, has strong adaptability to the environment, and can be fed in all waters. As a common herbivorous fish, it mainly lives in the middle and lower layers of the water body, and likes to move in areas with more aquatic plants.
2. Carp: Carp is native to Asia and is a fish with strong survival ability. This kind of fish lives at the bottom of the water. It can eat both meat and vegetarian food. It has a wide range of temperature adaptation. In winter, it will enter a semi-dormant state. At this time, it hardly eats anything. It will not recover its appetite until spring.
3. Crucian Carp: Crucian Carp is the most common freshwater fish in China. It is distributed in almost all major water systems and is widely raised artificially. This kind of fish has a wide range of feeding habits, strong adaptability, fast growth rate and easy to raise. It has high nutritional value and tastes good.
