The fish similar to the traffic light fish may be the lotus lantern fish, whose scientific name is A's neon fat carp, and like the traffic light fish, they are all neon fat carp fish. They are not only similar in variety, but also similar in shape and color. The belly of both kinds of fish has green and red ribbons. The difference is that the red ribbon of traffic light fish is shorter, starting from the belly and ending at the tail. The red color of Lotus Lantern fish starts from the eyes and extends to the tail. Moreover, the lotus lantern fish is more colorful and slightly larger.

Traffic light fish and lotus lantern fish can be mixed. Their species are similar, their body shapes are similar, and their environmental requirements and living habits are the same, so they are very suitable for mixed culture together.

Traffic light fish can be mixed with lotus lantern fish, moonlight fish, triangle lantern fish, guppy fish, Mary fish, etc. These fish are also small tropical fish, which have similar environmental requirements and are suitable for polyculture with traffic light fish.

In polyculture, breeders should first pay attention to the density of polyculture, otherwise they will fight for the space for activities, which will affect each other's growth and development. Moreover, the density of polyculture is too high, which will also affect the water quality, so it is best for breeders to decide the breeding density according to their size.