I have a 20G high that currently has 7 harlequin rasboras. I will probably be adding a small school of cory cats as well. I thought I'd round out the tank with a couple of male guppies. I know they're not schooling fish, but some sites recommend keeping 3-5 to keep them happy, while others say nothing about this. Also, one site I saw said you can't keep just male guppies, but I thought it was pretty common to do so in order to avoid fry.
Anyway, would it be okay to keep just 3 males?
Anyway, would it be okay to keep just 3 males?