1. Provide a suitable living environment: Starfish need a spacious and high-quality aquarium with suitable bottom sand, such as shell sand or coral sand. Keep the water clear, and ensure that the water temperature and salinity are within the appropriate range.
2. Give proper food: Starfish are carnivores, mainly eating slow-moving animals such as shellfish, crabs, anemones and sea urchins. Provide enough food, but don't overdo it to avoid water pollution.
3. Careful care: regularly observe the state of starfish and pay attention to whether there are signs of abnormal behavior or disease. Make sure they have enough room to move and provide suitable hiding places to avoid predators.
4. Maintain proper water quality: Change water regularly and use filters or protein separators to keep water clean. Seawater essence and trace elements are suitable components for maintaining water quality.
5. Provide adequate lighting: Starfish need adequate lighting to keep their color and health. Choose the lighting equipment suitable for the aquarium and follow the instructions.
Please note that raising starfish requires certain experience and professional knowledge. If you are confused about these steps, you'd better ask professional aquarium staff or marine biologists for help.