I have a 30g tank and everything would be perfect for a platy, except for one problem. There are already four relatively large swordtails in the tank. Although they're not usually agressive, when it comes to feeding time, they like to nip each other and chase each other away from the food. Especially the youngest and smallest swordtail seems to have trouble getting food. Of course, I've been keeping an eye on her, but I know that eventually she'll be bigger and everything will be fine. Platys on the other hand will always be smaller than my swordtails and especially if I get one with hi-fin who will be at an even higher disadvantage, should I be worried?