Got my fish order after waiting a week. I got 3 fish all about 2” , 5 minutes of them being in the tank the one I was most excited for got jumped and his eye eaten so we’ll see how that turns out. The other 2 are doing great , I just feel bad for this one and I don’t know if he will make it. Suggestion on what to do ? The 3rd picture down is the one who got attacked , don’t know if I should try to save him or euthanize him. He swims sideways always , has only eaten a little , and just stays in the corner of the tank