1. When raising Hawaiian cranes, the water temperature should be controlled between 20-28°C. When the temperature is too low, a heating rod can be used to increase the temperature.

2. The most suitable water quality for Hawaiian hangings to grow is alkaline with high salinity water. The pH value is between 8.1-8.4, and the specific gravity is between 1.020-1.025. Because the Hawaiian fish is a saltwater fish and cannot adapt to the freshwater environment, it cannot be raised directly in freshwater.

3. You can feed fish and insects to Hawaiian hangers, and you can also feed vegetable leaves. Feed once a day in the morning or in the evening, but don't feed too much each time.