So I’ve had this betta for nearly a year. I rescued him from Walmart where he was suffering fun rot, I took him home and he’s done great. He’s in a ten gallon tank with mystery snails. For the past couple weeks I’ve noticed he’s been kinda lethargic and his fins have started to become clamped. I’m treating with betta fix as of 4 days ago which seems to be helping. I’m not sure if it’s velvet, ich or just fin rot. His coloring seems to be the same though. I’m not sure what’s going on. Is this the right source of action? Any preventative I can do that won’t hurt snails? Video is him a few months ago .