Rainbow sharks can be mixed with any small fish, except angelfish, because rainbow sharks will suck angelfish when they grow up, and other fish are fine.

In addition, rainbow sharks can also be mixed with traffic lights, but There are certain conditions. It must be that the rainbow shark and the traffic light must be raised together from a young age, or the traffic light should be put into the tank first, and then the small rainbow shark. It is also possible to mix it. In this way, the rainbow shark and the traffic light can coexist peacefully. However, one thing to note, rainbow sharks will harass new fish, but rainbow sharks are completely toothless, as long as the new fish are not too weak, they will be fine after a few days.