guppy belongs to small tropical fish, and its body length is about 4-6 cm in adulthood. Guppies have bright body colors, and there are many kinds of colors. But guppies of different genders have different body shapes and different body colors. Growing in the same environment, the female guppies will be larger, and their body length will be about 6 cm in adulthood. But they are not rich in color, and most of them are silver or gray. Male fish are small in size, and their body length is generally 3-4 cm in adulthood, but they have many kinds of colors and strong ornamental value.

There are many species of guppy, including grass-tailed guppy, mosaic guppy, dress guppy, serpentine guppy, swordtailed guppy, metal guppy, monochromatic guppy, galaxy guppy, glass guppy, leopard guppy, ancient guppy and platinum guppy. The more common ones are mosaic guppy, grass-tailed guppy and dress guppy, which are described in detail below:

1. Mosaic guppy: The biggest feature of this guppy is that there is a dark blue patch at the junction of tail fin and body, which looks like mosaics from a distance.

2. Grass-tailed guppies: Grass-tailed guppies have large caudal fins with many round dots on them.

3. Snake King Guppies: The colors of Snake King Guppies are generally blue and green, their scales have metallic texture, and their bodies are covered with complex patterns and lines, which look like snakeskin.