I have a male betta fish in a 11ish gallon tank and today I bought 2 male guppies to put in there with him, there's plenty of hiding places and live plants so I thought it would be fine but I've come home and one of the 2 has his dorsal fin bitten off (I'm assuming) and his tail is shredded almost completely. I've taken both of them out and put them in separate tanks and I've added some aquarium salt and a little leaf for him to sit on. little guy is trying to swim around but keeps falling to the bottom. not sure if he's gonna make it but is there anything that I get get for him??