Need some help....i have a johanna (8inches) who was in a tank with a jag (14 inches), Sveni (7 inches) and a belly crawler(5.5 inches). I came home from work last night and found him beat right up. Looks like a clamp was shut tight around his mouth, his tail has been nipped at and has a couple markings along him body. The worst is around his mouth and face. Looks like either my sveni or belly crawler got a good hold of his mouth and tried to tear it off...he is still active some what and doesnt really look like he is lifeless or dying. Just looks like he is really badly hurt. He was removes right away from the tank. just want to know if i should treat him or how to do it. Or let him heal on his own.