Would type of breeding pair should i stock my 30 gallon with?

my fave breeding fish is the molly the are the best i had to and they had 20 live babies the Molly's eat there babies so be careful they also like to hide in the rocks and trees they seem to be friends with Ghost shrimp but there scared of frogs and ever since iv had my babies they have been disappearing and i now know my frog has been eating them! but the mollies can have up to 80 babies! to feed them take your normal food and crush it into powder so they can get it into there tinny mouths