Keep zebrafish, avoid feeding in large quantities, avoid changing water frequently and avoid excessive temperature difference. This kind of fish is relatively small and doesn't eat much. If it is fed in large quantities, it will easily lead to enteritis, which is not good for its health. Frequent water change will make the water quality fluctuate, and fish need to adapt constantly, and even produce stress reaction. Moreover, a large temperature difference is also harmful to the health of fish. Zebrafish is a kind of fish belonging to the genus Carassius, also known as blue striped fish, striped fish and zebra striped fish. The body is spindle-shaped. The back is olive, with several silver-blue longitudinal lines extending from the back of gill cover to the tail end, and there are also longitudinal lines with similar body color in the gluteal fin, and the caudal fin is long and bifurcated. Male fish have lemon longitudinal stripes, while female fish have blue longitudinal stripes and silver-gray longitudinal stripes. There are dark blue and silver longitudinal stripes. Life span is generally 2-3 years, and the longest is 5.5 years.