Columnaris (Mouth Fungus) Columnaris is a bacterial infection that typically appears as white, fuzzy growth around the mouth and fins of betta fish. To prevent this disease, maintain clean water and minimize stress. If your female betta shows symptoms, seek immediate treatment with appropriate antibiotics. FAQ Are Female Betta Fish Peaceful? Rapidly and safely treats fungal infections on body and fins of fish Contains all-natural extract from West Indian Bay Trees to help with fungus and cottony growth Helps heal internal and external bacterial infections in freshwater, saltwater and reef aquariums If there aren't any symptoms remaining then you can go ahead and remove it through weekly 30% water changes. However, if the fungus persists you want to increase the salt concentration. If the condition of your fish very more severs then jump to level 2, i.e. 1-tablespoon salt for every 2-gallons of water. But the fungus might again come back At lower temperatures, betta fish have trouble digesting food properly and fighting off infections. Another possibility is that your fish is battling a disease or infection. If your fish is gasping for air, lying on his or her side, and unable to move, a fungal or bacterial infection may be the issue. Check for sores, bulging eyes, white spots Fish-to-fish transmission of illnesses happens more frequently than one would expect. For instance, Bacterial Gill Disease can be transferred from a sick fish to your healthy betta. There are two things you should do to prevent diseases from spreading between your fish. First of all, you should quarantine all new arrivals for 14 days. Treatment. Remove some water from your betta’s tank and use it to fill a container. Fill the container with Epsom salt, following the manufacturer’s guidelines. Once the salt has dissolved, place your betta into the Epsom salt bath. Leave your pet in the bath for at least ten minutes. During your betta’s bath, float the container in his General signs. The general signs of illness are lethargy, discoloration, loss of appetite, labored breathing, and damaged and/or clamped fins. Unfortunately, many of the most common betta fish diseases share these symptoms and correct diagnosis can be difficult if you’ve never had experience with them before. The problem is most common in community tanks, where new fish are introduced without being quarantined. Gill flukes are tiny parasites that attach to a betta’s gills. They prefer to live in the gills, which is where they reproduce. Without treatment, gill flukes can be deadly. They will cause wounds and sores, leading to secondary infections. Yesterday, as I was doing my weekly water change, I noticed my betta had a puff of white fungus on his mouth. I added a little aquarium salt to the water. Today, the fungus seems to have spread and he is just laying at the bottom. I bought the fish a little over a year ago and fear he just might have gotten weak from old age. It's 1 drop per gallon daily until the symptoms clear up. Usually takes a few day's but I dose to a week. He made it through the night with 1 tsp/gal aquarium salt! The white fuzzy spots on his face are gone, but his mouth/face is still swollen. inaO8GG.