I've just been cleaning out my tank and i noticed one of my fish wasn't moving. I poked the plant it was hidden in and it didn't move. Anyway, i grabbed it out of my tank with a net and to my nasty surprise the fish (platy) had most of its body gone. It also had the foulest smell coming from it.

I have no idea how long the fish has been dead but now i'm worried about my other fish in the tank, 2 of which are babies. Do you think they will be alright, or is there anything i can put in the water? I'm going away in two days so i can't keep an eye on them. I'm also worried now that more fish will die and they too will rot in my tank.