The mosquito fish and the guppy are both fish of the killifish family. They are related, so they are relatively close in terms of appearance characteristics and breeding methods. Therefore, many people will confuse these two kinds of fish, in fact, they still have some differences. The most obvious is their tails. The tail of the guppy is very characteristic, in fact, it is named because of the tail, their tail is very big, and very beautiful, just like the tail of the peacock. The mosquito fish's tail is not so big, and there are many small spots on it; Moreover, the mosquito fish's tail is transparent and colorless, not as beautiful as the guppy's tail.
In addition to this most obvious difference, there are also differences in their behavioral characteristics. Mosquito fish is a special kind of fish, because it preys on mosquitoes. So, when they are cultured, they may be observed jumping out of the water to catch mosquitoes, but guppies do not have this characteristic. However, this behavior is not easy to observe.
It is best not to put mosquito fish and guppies in a mixed culture. The guppy is mainly a domesticated fish, while the mosquito fish is mainly a wild fish. Therefore, this leads to the activity of eating and fighting of mosquito fish is higher than that of guppies, which is not conducive to guppies if they are kept together. However, the two species of fish can be crossed, and the female guppy and the male mosquito fish can be selected for hybridization.