My betta Dinq is having a little problem with a haggard dorsal fin now. It seems its a little torn around the top edges and there's a tiny sliver that is split closer to the head on the dorsal. I keep telling him whatever it is in there he needs to leave it be. Now he just looks like a little ragdoll instead of a "show betta" as I like to tell him.
I can't figure out which plant in my tank could be doing it. I added more little plants and more medium plants because he has a problem with glass surfing. His other fins are fine and aren't split, it's just his dorsal.
Any ideas? I will get some pictures posted.