how can i tell if my platy is pg? i have 1 in my tank that has a bigger belly than the others. some people say that theri belly becomes square like but i can tell when my guppies and swordtails are pg but they dont look like they have a square belly. i cant see any eyes becus of the color of the platy. so is there any ACCURATE way to see if she is really pg. her belley is bigger but it does bigger straight down. her belly didnt expand to the sides