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2. At the end of March every year, the breeding equipment is put into use, and the fatness of Haihong is tested every day. If Haihong suddenly loses weight and lays a lot of eggs, it can be put into breeding equipment in time according to the specific breeding area and let it naturally pick seedlings. The management of cultured sea rainbow is relatively simple, so it is necessary to patrol the sea area regularly to prevent the frame from being broken and tangled, and the buoyancy must be adjusted in time.

3. Harvesting can be carried out in time according to the density and area of seedlings. Generally, in July, when the sea rainbow grows to 1- 1.5cm, it can be harvested, and it can be sold to shrimp pond farmers as bait or as fry.