Wow...looking at those pics I am forced to assume that the fish is now dead. I agree with the above, regarding the level of overstocking, the incompatibility issue and the problems with differing parameter requirements.
People, please! I am addressing the OP and all the numerous others who do this: when you have a fish that is getting the stuffing beat out of it by tankmates...DO NOT sit around taking pictures, posting them online with questions, and waiting for responses for days! Either the victim or the perpetrator needs to be removed, pronto, before the situation gets to this extreme point. If all the abuse is coming from only one aggressor, then removing that fish reduces the stress on the victim without stressing it even further by moving it.
Specifically, DO NOT watch the thing being tortured for days, as its fins go "missing" and its skin and tissue are systematically torn off, while you mull over your options. And if you have separated the poor thing and it looks like this one does, DO NOT put it back into the tank where all this occurred to it! When it is at this point, it is not much more than a still-barely-breathing chunk of fishfood, to be slowly picked apart by its tankmates.