Stingray, also known as Huang Lading, is an omnivorous bottom-dwelling fish that prefers to live and feed in low-light environments. These fish are typically found near the water's bottom and have specific requirements for their breeding and rearing conditions.
For fry cultivation, a small pond of 10–20 square meters with a depth of 0.7 meters is ideal. The pond should be rectangular, with a flat, tiled or cemented bottom to ensure cleanliness and ease of management. Newly hatched larvae can be stocked at a density of 5,000–8,000 per cubic meter, while 1–3 cm fry are kept at 3,000–4,000 per cubic meter. For larger fry (3–5 cm), the stocking density decreases to 2,000–3,000 per cubic meter.
Feeding should follow the "four definite" principle—feeding at fixed times, in fixed quantities, with fixed quality, and using fixed methods. Depending on the size of the fish, natural food sources such as plankton or micro-particles can be combined with artificial feeds to ensure balanced nutrition.
In intensive cement pools, higher stocking densities lead to more waste and impurities, so it’s important to regularly siphon the bottom and monitor the health of the fry daily. Any signs of disease must be addressed immediately to prevent outbreaks.
When raising stingrays in ponds, the area should be around 3 acres with a water depth of 1.5–2.0 meters. The pond bottom should be sandy soil, which helps retain water and nutrients. Water inlets and outlets must be properly set up to prevent fish from escaping through nets.
Before stocking, the pond should be leveled, and a drainage culvert about 20–25 cm deeper than the surrounding area should be dug to facilitate harvesting. Wild fish should be disinfected using lime before introduction.
Fry stocking density varies depending on size: 5,000–6,000 per mu for 3 cm fry, and 4,500–5,500 per mu for 4–5 cm fry.
Adult stingrays require a diet rich in protein, combining both natural animal feed (such as small fish, shrimp, and aquatic insects) and artificial compound feed with 38–40% crude protein. Feeding should follow the "four set" and "four look" principles, adjusting the amount based on the total weight of the fish and water temperature.
At 10–15°C, feeding amounts should be 1.5–1.8% of body weight; at 15–20°C, 2–2.5%; and at 20–36°C, 4–5%. Regular pond maintenance is essential, including monitoring feed, managing water quality, and controlling diseases. Daily inspections, weeding, cleaning, and removing dead fish are critical to maintaining a healthy environment.
For net cage farming, stingrays can be raised in floating cages on large water bodies or in smaller cages within ponds. Small cages are commonly used, requiring a pond area of 5–10 acres with a depth of 2–2.4 meters. Before setting up cages, the pond should be treated with lime or bleach to eliminate pathogens.
Cages are made of polyethylene mesh with a 1–1.5 cm mesh size. Each cage is usually 4x2x2 meters and secured with bamboo frames. The cage area should not exceed 50% of the pond to allow proper water circulation.
Stocking typically occurs between June and July, with fry over 5 cm in size. Stocking density is around 500–600 per square meter. Fish must be disinfected before stocking to remove parasites and bacteria.
Feeding follows the "four-determined" method, avoiding spoiled feed. Natural food can be pelleted and fed directly, while compound feed should be given in small portions 2–3 times daily, at 4–5% of the fish's body weight.
Regular water changes and lime applications help maintain good water quality. Cages should be checked twice daily for damage, and disinfectants like 0.04% iodine salt and 0.04% sodium bicarbonate should be used periodically. Bait should be removed promptly, and nets cleaned regularly to ensure optimal water exchange and fish health.
Tuna Loin,Frozen Tuna Loin,Fresh Tuna Loin,Yellowfin Tuna Loin
ZHEJIANG RETRONX FOODSTUFF INDUSTRY CO.,LTD , https://www.retronxfoods.com