My male velitail betta has lost some of his fins. For two weeks I was doing %30 water changes every day because I thought he had fin rot but it just got worse. He still swims around and is very active but keeps loosing bits and pieces of his fins. He is a very friendly/Docile Betta and I wanted to get 6 harlequin Rasbora but I didn’t want to Incase this was something serious. Right now the only thing with him is a mystery snail, named butters. I have live plants only (Amazon sword) and a Little Rock mountain thing. He has a filtered and heated 10 gallon tank. Here are pictures of him and the tank: Any help is greatly appreciated!