Mosquito-eating fish do not grow up. Adult mosquito fish is 2.5 to 5 cm long, with a broad head, pointed snout, large eyes, small teeth, and no beards. Male fish are brightly colored, and it can be said that they are small fish just by their size. Unlike many fish, the mosquitofish has a naturally drooping and outwardly extending tail behind the body's dorsal fin. The most beautiful thing is the black stripes that run from the head to the tail, just like the dragon pattern on the emperor's court clothes, full of domineering. With the transparent fins, it is no exaggeration to say that he is the general among the fish.

It is said that fish with low environmental requirements are the most distributed. The best to feed, the same is true for mosquito fish. This small fish generally survives in various static pools such as reservoirs, lakes, and canals. It is a freshwater gregarious animal. In particular, it feeds on a variety of insects.