Hey everyone I'm new and just really need help. My betta is a red veil tailed betta. I am new at this but I've been trying to provide the very best care! He is in a 2.5 gallon tank with plants and a snail, a small heater and I just bought a new filter which has been doing great. Every 2-3 days I do 50% water changes and every Sunday I do a 100% water change an clean everything. Just recently he has developed some issues and deformities around his face. Can some please help me figure out what this is? He has become lethargic and not eating his favorite blood worms! He finally recognizes me and he's the best. I just want to help.