It is better to mix blue-billed fish with guppies, red swordfish, moonlight fish, black Mary fish, golden peony, etc.

The fry of various medium-sized ornamental fish can also be mixed with the blue mansaurus, such as small map fish, small parrot fish, sub-adult swallowfish and Yacheng colorful and so on, these ornamental fish and blueman dragons are mixed together, and there will be no problems.