Red Sea Knights are best on plant-based foods such as seagrass and seaweed. This boosts their body's immunity, reduces aggressive behavior and improves overall health. Dried seagrass can also be tied to the stone for feeding, and it is recommended to feed 3 times a day. Or prepare some artificial plant bait, which can be more convenient.

Red Sea Knights are easy to care for, but they are prone to sideline rot or head hole disease. A vegetarian diet with higher nutrition is required, and carotene can help reduce the incidence of Red Sea Knights. According to the survey, floating algae is also helpful for the disease prevention and control of the Red Sea Knight.