The fish species selected should be either wild-caught seedlings or artificially cultivated fry that are collected from natural marine environments. They must be healthy, free from diseases and injuries, exhibit normal behavior, and have a strong vitality and good physical condition.
The mesh size of the netting is determined based on the size of the fish. Fish weighing more than 0.25 kg typically use nets with a mesh size of 4 to 4.5 cm, while those weighing 0.25 kg or less are suited for 2.5 to 3 cm mesh. For fish smaller than 10 cm in length, a finer mesh of 0.8 cm is recommended.
When raising groupers, the stocking density should ideally be between 60 and 70 fish per cubic meter at a water temperature of 25°C. In practical aquaculture settings, it is common to raise approximately 500 fish in a 3m x 3m x 3m cage. Studies have shown that stocking densities of 15, 30, and 60 fish per cubic meter result in similar growth rates. However, maintaining moderate stocking levels helps improve the efficiency and productivity of the cages, ensuring better resource utilization and higher yields.
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