I am moving my goldfish from my 28gal to a pond. I moved my two rosy red minnows into my 10 gallon with my six plates, 3 guppies, and snail until I clean out the 29gal. I am breeding the platies and guppies. I want about 35-40 fish total in my 29. Could I get mollies and swordtails? I don't want them to breed but I don't care if they breed with the olther fish because Ive heard the offering are infertile. So with those numbers in mind, how many mollies and sword tails can I get and what genders?