my female cuban has developed what lookes like a couple, i guess the best i could describe it, blisters on her back towards the hind end. she shows no signs of being lethargic and the male cuban that was in the same tank looks fine. we have quarentined her but the closest vet that woult look at her is about 4 hours away. does anyone have any idea as to what this could be and how to treat it?