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Autumn is an ideal time for fish to gain weight and grow stronger. For farmers, effective feeding and management during this season are crucial for maximizing yields. Long-term research by aquaculture scientists has shown that proper care in autumn can boost production by up to 30% compared to regular practices. Ensuring good conditions in autumn not only improves the efficiency of fish breeding before winter but also enhances their ability to survive cold temperatures if they don't meet market size requirements. This sets a solid foundation for their survival through the colder months.
What should you focus on during fall?
First, pay attention to bait preparation. In aquaculture, there's a natural food chain involving organisms like zooplankton, which many fish species rely on. During autumn, it's important to fertilize the water to encourage the growth of these natural food sources. At the beginning of autumn, when temperatures are still relatively high, fertilization should be done in small amounts. This helps maintain good water quality while keeping it rich in nutrients. For example, applying 2.5 mu of urea and 5 kg of superphosphate can make the water appear green or tea-colored, which is ideal for fish growth. In clear water ponds, fermented animal manure is often used instead. Applying 400–500 kg per acre every 7–10 days can quickly boost plankton levels, providing essential nutrition for fish. As autumn progresses and temperatures drop, organic fertilizers help thicken the water, promote plankton growth, and ensure fish have enough energy for the winter.
Second, as temperatures begin to drop and day-night temperature differences increase, fish start storing energy for the winter. At this stage, it’s important to provide sufficient feed. Feed once daily in the afternoon, ensuring that all food is consumed within two hours. Additionally, increasing the amount of concentrated feed—such as bran, rice bran, peanut meal, and soy flour—can support better growth. Feed about 2.5–3% of the total fish biomass each day. After October, adjust the feeding quantity slightly to meet the growing nutritional needs of the fish.
Third, maintaining good water quality is essential for healthy fish growth. Freshwater should be added every 7–10 days, with each change ranging from 20 to 30 cm. Apply 20 kg of quicklime per mu to neutralize acidity, raise pH, and improve water clarity. This should be done twice a month. In heavily fed or fertilizer-based ponds, eutrophication is common. To manage this, plant floating plants like water spinach or lotus on bamboo rafts, covering about 50–60 square meters per acre. These plants absorb excess ammonia and improve water quality. They also serve as additional feed for grass carp.
Fourth, watch for signs of oxygen depletion, known as "floating heads." With higher stocking densities and increased feeding, ponds may become hypoxic, especially at night. Regular monitoring is key. If fish eat less, leave more bait uneaten, or show signs of distress, it could mean low oxygen levels. If you see surface waves or fish swimming near the top, take action immediately. Use aerators or add fresh water to increase dissolved oxygen. If no aeration is available, dissolve 5–20 kg of salt or alum per acre, or use an oxygenating agent as instructed. Also, remove debris to keep the water clean and reduce pollution.
Lastly, prevent diseases such as enteritis, gill disease, and red skin. Every half-month, apply 1 kg of bleaching powder per mu of water. Combine this with feeding “Cyprevir†and “Fishikang†to prevent illness. If disease occurs, treat with a water disinfectant twice and continue medicated feeding for 4–5 days.
Finally, prepare for winter. If fish aren’t yet ready for market, plan for wintering. Some species need to be moved to separate ponds to avoid predation. Species like softshell turtles, squid, and others should not be mixed with smaller fish to prevent aggression. Before winter, sterilize the pond and fill it to a depth of 2–3 meters for better insulation. For tropical or subtropical fish, use frost protection measures such as sheds made of reeds or plastic sheets placed 20 cm below the water surface. Each acre should have 80–100 square meters of coverage to protect the fish from freezing.
1. Rich soy sauce fragrance, unique charm.
The soy sauce-flavored kimchi emits a mellow soy sauce fragrance. That unique taste is like a wonderful journey for the taste buds, making people intoxicated. 2. Rich in taste and distinct in layers. Every bite of kimchi brings a rich taste experience. It has both the crispness of kimchi and the richness of soy sauce. With distinct layers, it leaves a memorable aftertaste. 3. Traditional craftsmanship, carefully brewed. Inheriting traditional production techniques, carefully selecting high-quality ingredients. After a long period of fermentation and pickling, this deliciousness is achieved. 4. Versatile delicacy, freely matched. Whether it is paired with rice, noodles, porridge, or cooked together with meat, seafood, and vegetables, the soy sauce-flavored kimchi can add a unique flavor to dishes. 5. Nutritious and a healthy choice. Rich in various vitamins and probiotics. While enjoying the deliciousness, it also brings benefits to your health. 6. Convenient and fast, enjoy at any time. With exquisite packaging, it is easy to carry and store. Whenever and wherever you want to eat, you can easily taste this deliciousness. 7. Regional characteristics and cultural inheritance. The soy sauce-flavored kimchi carries the culture and tradition of the region. Let you feel different local customs while tasting delicious food. 8. Delicious temptation, hard to resist. That rich soy sauce fragrance and crisp taste make people unforgettable once tasted and become a regular on your table.