Guppy (Poecilia reticulata) is a renowned tank fish. Even people who are not into aquarium husbandry know about this fish, not to mention aquarists. Each of them has surely had a guppy fish in a tank even just once.
Some aquarists started their hobby from buying a couple of guppy fish and even now they have some splendid selective breeding guppy species. To answer all the questions about this fish we’d have to write a book, but we’ll try to discuss the most common ones here, in this article.