I had I believe a hawk attack on my fish a week ago and thought 1 of them got snatched but come to find out he is still there, but injured , cant really get a good look at him, has been hiding ever since and not eating, and pond is 4 ft deep cant see bottom, only know is is there because I scared it up to surface with net, but too hard to catch, my question is should I leave it be and see if it recovers ? will treating pond with a little salt help? or try to catch and treat in a separate container? any advice would be great thanks