Help need to know when my platy will have babies, I discoverd a baby fish in my tank a few weeks ago, its a rosy barb i think, seeing that i was so excited about the baby fish my mother in law gave me some pregnant platys, im not sure how long they have been pregnant or when they will have babies. i have never experienced this and im not sure what to look for. One of the platys is very big and has red bhind her belly, i would like to take her out of the big tank and into a breeder or smaller tank but im not sure when to do it and i dont want to isolate her if it will be a long time can anyone help. 
