Please could you offer some advice I have 3 female Platy fish from birth (sisters!) they are nearly a year old now in a well cycled tank with three male guppies and some tetra. 2/3 of the platy fish have lost chunks of their tail , cloudy in places - the other platy is totally fine and tail is full. Because one platy was fine I was worried the two were getting bullied by the male guppies, but I hadn’t seen this before until their tails were stumpy like now and the biggest guppy was circling them- possibly as they were ill though as I didn’t seen them being nipped. I’ve moved all three platy’s into a large breeding net in the existing tank to protect them and also keep an eye on the third healthy tailed platy in there. The healthy platy still fine 2/3 days on so perhaps it is guppy agreddion? Please could anyone look at my pictures and advise xx