Zebrafish can be mixed with guppy, because both of them are tropical fish, and their requirements for water temperature and water quality are similar, so mixing together will not make one party uncomfortable. In addition, zebrafish and guppy are similar in size, both of which belong to small fish, and the problem of bullying the small by the big will not occur when they are mixed together. Also, zebrafish and guppy have similar personalities, both of which belong to mild fish. If they are mixed together, there will not be too many contradictions.

Zebrafish can be mixed not only with guppies, but also with other small tropical fish with mild personality. Because they are not only gentle in character, but also have strong adaptability, they can be mixed with many small tropical fish.

1. Density: Although zebrafish belong to small fish, their activity is relatively high. Breeders should pay attention to the density of breeding not too high, otherwise hypoxia may occur.

2. Feeding: Zebrafish have the habit of grabbing food. When breeders mix them with other fish, they should pay attention to feeding. When feeding food, it is best to sprinkle it evenly on the water surface, which can reduce the situation of zebrafish grabbing food.

3. Change water: Zebrafish don't have high requirements for water quality, and they like old water, so they can change water once a week at ordinary times. However, when mixed with other fish, the water quality will deteriorate faster. It is recommended that breeders install filters to slow down the deterioration of water quality.