how many guppies would it take to get a stable population of fish in my tank with all the semi-carnivorous fish in my tank? ive bred platies before but the male died and i have one female left. i did get one baby platy out of them though. the semi-carnivorous fish that i have are a 4.5 inch yellow bullhead, 4 inch rainbow shark, and maybe my danio. idk but each time i get a baby fish it is eaten that night. can i get a lot of baby fish with guppies? if so how many babies?