Two days ago I got a red/purple/blue small crowntail, now named Frisco, from walmart. They didn't have very many bettas and the ones that were still alive mostly looked fairly healthy. Frisco here had terrible fins and his cup was pretty dirty. It didn't look like he had much life left in him if something wasn't done soon so I snatched him up. Once I got him fed and in his new 2.5 gallon home, he perked up very much. He acts perfectly fine, he is very active and eats like a pig. I've been giving him betta pellets and some bloodworms. His fins are just disheveled. I've been treating him aquarium salt and stress coat, but I'm not absolutely sure of what is going on with him. I've had many fish but I've never dealt with fin rot before. Does this look like fin rot? Is there anything else I can do for him other than frequent water changes, aquarium salt, and stress coat?