Adult zebrafish persist in not eating for one month, because they have matured and their demand for food will not increase, so they can persist for a longer time. If zebrafish live in good water quality, it can even last for about 2 months.

But juvenile zebrafish can't go unfed for too long, because they are at a critical stage of growth and development, and if they don't have enough food, they will persist for a short time. Generally speaking, zebrafish in their infancy don't feed food for up to one week, and some of them have poor physique for up to 2-3 days.

Zebrafish can be fed once or twice a day, and how often they are fed can be determined according to their growth and development stages. If they are in their infancy, they can be fed twice a day. Because the demand for food and nutrition in juvenile zebrafish is relatively high, but their appetite is not large, breeders need to choose a small number of feeding methods.

When they are adults, they can choose to feed them once a day. Because zebrafish will need less nutrition in adulthood, and their appetite will increase, it is ok to feed them once a day.