I am setting up a new tank (fishless cycling begins tomorrow!). I would really like to have a tank with just guppies in it, or maybe just platties. Is this ok to do, or will I end up with a tank full of babies fish and fighting males in a few weeks?
it depends on the size of tank and number of fish!with livebearers its best to have 2 females to every male to spread out aggression but be prepared to be overrun by fry!