tattered fins

The condition of my betta's fins are continuously getting worse and I'm just frustrated at this point. Started with a small u-shaped area missing which has now doubled in size and length. It seems as though his fins that were all once an even length are now all tattered and it looks in some...

Hello all, I'm in a bit of a tough situation. My red VT has always been a fin biter but his fins have always grown back with ease and I've had no problems with fin rot. My new marble HM has some pretty severe fin rot and I've began treating it with Bettafix. My VT is thriving from the betta fix...

Here's a picture of my Betta. He's been extremely lethargic (sits at bottom, only comes up for air) and is developing white patches on his gills and now a little at the base of his dorsal fin. His dorsal fin also looks tattered (possible fin rot?). I had my tank water tested at a local pet store...