My betta has had a gill puffed out a bit for about two weeks now. I started to use antibacterial drops to help him out, but he's been hiding in his castle, and hasn't eaten in a few days. I recently changed his water and noticed that he had red things on the ends of his tail and fins. What could this be?


While a photo could help, it sounds like the red things could be blood blisters. He could have been hurt by rough objects in the tank.

I recommend that you clean your fish and apply the antibacterial drops. Then, remove any sharp or rough objects from the water.

Updated on April 5, 2018

Original Article:

13 Common Betta Fish Diseases (With Photos): Prevention and Treatment
By Januaris Saint Fores