Hi everyone im new to this on my own and thought i would go out and buy my very first tank only expecting to buy a gold fish, however that all changed when i went to purchase my new fish for my tank they ask for the liters which is 20 and the snubbed myself and my partner for even thinkin about putting a gold fish into it, they suggested the.varitus platy which where.sold.has temperate fish which sounded great at the time so we agreed we were then told to select any from there variaty so we simply chose and was on way, All night we.spent watching them fight mainly my big yellow tail one rip into my poor red one thats when i started doing some research and found i needed a ratio of 1 male to 3-5females and that was that.i simply demanded they take the agresive one back and exchange him for a female and whille i was there i explained it to.the lady who pointed out two females to me so i accepted them both and got an orange one to go with.it, however recently ive been carrying on with my research and discoverd the.two she suggested are pregnant,the fry would die without a heater, and that i needed to seperate the mothers.from the fry , my tank is already nearly overstocked i think and im to soft to let the fry die so i have.arranged for a bigger new tank to be made by my uncoe who makes tanks but my question is when will they give birth to her fry she is big and square oh and is pooping loads is this normal