The water temperature of the lanterns should be controlled at 25 degrees Celsius. If the water temperature is too low, the activity and feeding of the lans will be affected. If the feeding and swimming are hindered, the lans may die slowly. Change the water 2 to 3 times a week to ensure that the water quality is clean, and change a third of the water each time.

When changing the water, the temperature change should not exceed 1 degree, and feeding is generally fed Feed and nematodes are enough. Feed them once a day in the morning and evening. It is advisable to finish the feeding amount within five minutes.