Hello all so I noticed about a week maybe 2 weeks back that my Royal Gramma’s tail was damaged, it hasn’t got progressively worse until maybe today it looked a bit more torn possibly, not sure but is this tail rot or another fish nipping him or? I only have a royal gramma, purple fire fish, 2 clowns, and a lawnmower blenny in the tank besides shrimp hermits and snails. None of the other fish have damaged fins at the moment. He’s been in my tank for about a month or 2 now. I don’t think it’s aggression considered he’s currently the most aggressive one in my tank rn. During feedings he’ll dart across the tank and eat as much food as possible before the other fish get to it so I’m not sure what’s going on, any help would be great!