Guppy, or Poecilia Reticulata, is the tropical fish and so popular almost in pet store. Robert John Lechmere Guppy discovered this fish in them 1866, and they named this species Girardinus guppii in his honor. More than one hundred years, breeders collect and select various varieties colorful fancy guppies, or showing high quality guppy. They live in school and peace with other fishes, so that makes an ideal addition to community tank.
https://youtu.be/wJW6GiD-rKQ