That said, be aware that guppies frequently breed and give birth to live young in captivity, so be ready to welcome a new generation of guppies! Zebrafish, aka Danio Rerio or "zebra danios" are a ...

Whatever the reasons, it is clear from the research of Endler and other evolutionary biologists that male guppies live in the crossfire between their enemies and their would-be mates, with the ...