Three rat fish can be mixed with other fish, and can be mixed with Mary fish, mini parrots, silver sharks and kissing fish. The fish that are polycultured should be close in size and have similar requirements for water temperature and water quality, so that there will be no problems when they are raised together.

In addition, it is best to choose temperament Gentle fish, so they won't fight when they are kept in polyculture. If the fish are territorial, choose a larger tank.