guppies can cross with moonlight fish, Mary fish, red swordfish, etc., because these kinds of fish reproduce in the same way as guppies. As long as the breeder keeps the adult guppy and other fish, they may cross. Although they can cross, it is best for breeders not to let them cross. Because hybridization may affect guppy species, and may make their physique worse.

guppy can be mixed with traffic light fish, zebrafish, moonlight fish, Mary fish, rat fish, moss rat fish, red swordfish, Mickey fish, ingot fish, kissing fish and fairy fish. These fish are small tropical fish, which have low requirements for the environment and strong adaptability, and are very suitable for raising with guppies. Coupled with their gentle character, there will be no fighting, and even if there are many kinds of polyculture, there will not be too many conflicts.

Although they are all small fish, and their space requirements are not high, the lack of space will also have a certain impact on their growth and development. Breeders need to ensure reasonable feeding density to avoid insufficient space and lack of oxygen. When feeding at ordinary times, the breeder had better feed the fish with strong ability to grab food first, and then feed the fish with weak ability to grab food.