During feeding time I noticed my Albino Rainbow shark had something green on its mouth. I looked closer and I can’t tell if maybe he got algae smeared on his mouth (idk if it’s even possible) or possibly a fungus (once again idk if that’s possible) those are the only two things I came up with. Unless he’s making a fashion statement... I unfortunately can’t get a picture, the best I can describe is as if he was wearing green lipstick around his mouth (no where else) he’s not acting weird, he came out to try to steal some of my Buenos Aires tetras shrimp pellet scraps and then/currently swimming around doing his normal activities. Any insight on what’s wrong, if anything even is wrong?