Updated On September 23rd, 2025
Pet's info: Fish | Unknown - Fish | Male
My male betta fish has been in its 3 gallon tank for close to a month, today it was at bottom of the tank and is very slow. There is white fuzz behind its fins and at end of tail. Tail looks split too. There is a snail in the tanks as well and a small live plant. The temperature is around 78 degrees Fahrenheit. There are also rocks in the tank, a filter, moss ball, and air being pumped into the tank. I feed it betta flakes. We also put cucumbers in the tank for the snail at times. Please help.
1 Answer
Published on July 25th, 2018
It could be some fin rot and fungus growth. The foundation for treatment and recovery is pristine water. You can use a home test kit or submit a water sample to confirm proper chemistry. Most pet stores will do this for free or for a small fee. Aim for 0 ppm ammonia, 0 ppm nitrites and 20 ppm or less nitrates. Perform a partial water change if indicated. Use aged or conditioned water that is temperature matched to prevent further stress or shock. Do this every few days to maintain water quality. To treat the fungal infection, you'll need a product such as Fungus Cure (API) or LifeGuard All In One (Tetra) . You can find them in the Aquarium section of the local Petco. Follow label directions and remove the carbon filter insert during treatment. Water changes and medication should resolve the infection in a week or two. The fins should slowly heal up afterwards. Perform regular testing and partial water changes to keep the tank clean. Remove any uneaten food to prevent fouling the water. Feed a high quality, high protein pelleted diet. Hikari makes several types. You can find them at Petco as well.
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