I've had my crowntail betta, Mr. Fishburne, for about 3 months. I keep him in a one gallon cube, heated to 76-77 degrees. I usually do 100% water changes once to twice weekly. I use Prime conditioner in his water.
About 1 month ago, I decided to try using a cup to remove him instead of a net, thinking it would be safer...well, I accidentally caught some ray tips from his anal fin between the cup edge and the side of the tank and broke them off!! Now, I've been noticing that the webbing on his anal fin looks somewhat transparent. The picture of him flaring is from before the "cupping" incident.
I've started adding 1/2 tsp Aquarium salt to his water and I have been using Bettafix for the last five days. I haven't seen any change. There are no dark edges like what I hear about with finrot. Does anyone have any ideas after looking at the pictures? Thanks so much.