The Squid, also known as mandarin Fish or season fish, belongs to the family Scorpaenidae and the genus *Siniperca*. It is widely distributed and typically breeds in major river systems and various freshwater lakes. This fish is known for its tender flesh, minimal bones, and rich flavor, making it a popular dish among consumers. In aquaculture, it's often raised in ponds either alone or in combination with other species to control wild fish populations. Due to its high market demand and fast growth, it has become one of the most popular freshwater fish species in aquaculture.
Squid is a carnivorous fish by nature. When raised in captivity, it can be fed dead fish, shrimp, or other aquatic animals. Males reach sexual maturity at the third year, while females mature at the fourth year. The growth rate of males is relatively faster—by the first year, they can grow to 50–100 grams, then reach about 0.5 kg in the second year, and up to 1–1.5 kg by the third year.
For optimal pond conditions, adult carp should be kept in ponds ranging from 3 to 8 acres, with a depth of at least 1.5 meters. During summer, the water level should be maintained around 2.5 meters. The bottom should be sandy loam with low organic content, and the water must be fresh and well-circulated. The dissolved oxygen level should be above 5 mg/L, with a pH between 7 and 8, and water clarity of more than 30 cm.
Bait fish cultivation requires an area three to four times larger than the carp pond. To meet the dietary needs of squid, white bream, minnows, and similar species are commonly used. Stocking density is usually 30–50 thousand fish per mu. After fry stocking, feeding should be delayed until zooplankton levels drop and the fry gather around the pond. Initially, feed like soy milk can be given, and later, bait fish size should be controlled so that their length is between 1/2 and 1/3 of the carp’s body length.
When stocking young squid, it's recommended to keep them at 8–10 cm, with bait fish sized between 3–4 cm. For each mu, 800–1000 squid of this size can be placed. Alternatively, fast-breeding fish can be introduced into the pond to serve as live feed. Typically, 200–400 pairs of small fish per mu or 60 two-year-old winter carp can be added. Using fine nets to divide the pond allows for simultaneous breeding of different species, ensuring that juvenile fish grow through the net and become food for the squid without disturbing the reproduction of other fish.
Feeding management is crucial. Fish should be fed every 7–10 days during early and late stages, and every 5 days in the middle stage. The ratio of carp to bait fish should be maintained at 1:5 to 1:10. Too few bait fish may slow growth, while too many can lead to oxygen depletion and floating heads, which are harmful to the carp.
Water quality must be carefully managed. Fresh water should be added frequently, especially from June to September, every 5–7 days, adding 15–20 cm each time. This helps maintain a healthy, cool, and nutrient-rich environment. Submerged plants like Vallisneria and Hymenocallis can be planted around the pond to provide shelter and improve water quality. Lime water should be sprinkled every 15–20 days at 15–20 kg per mu. Aerator use should be timely to increase dissolved oxygen and prevent fish from suffocating. Oxygenation agents should also be on hand for emergency situations when fish show signs of oxygen deficiency.
Hake Fillet,Frozen Hake Fillet,Hake Fish Fillet,Hake Fillet Fish
ZHEJIANG EVERNEW SEAFOOD CO.,LTD , https://www.evernewseafood.com