Hi looking for help with my angelfish. Had him around a week chose him as he.was getting nipped by the other angelfish. Now I think someones nipping him! Every morning I get up his anal fin looks shorter no change in color or streaking on his fin. He's in with my pearl gourami, Sailfin Molly & elephant nose. The only fish I,ve seen doing the nipping is the angelfish, even wondered if he was getting caught by my elephant as he's hand fed. Worried it might be fin rot. Could someone please help as I love this guy