1. Water temperature: Electro-optical mermaids have high requirements for temperature, and 22-26°C is the most suitable for the growth of electro-optical mermaids. Water temperature lower than 22℃ will affect the eating and spirit of the electric mermaid, and higher than 30℃ will make the electric mermaid unable to adapt, and even cause them to die.

2. Feeding: artificial feed can be fed to electric mermaid, or active bait can be selected . Usually you can feed brine shrimp larvae, water fleas or silk earthworms and other foods. The amount of each feeding should not be too much. When there are too many residual bait in the excessive feeding, the water needs to be changed.