fin rot betta

I have had my Betta fish for a few months and recently had to move out of school because of the virus which meant driving 4 hours with my fish, he seems mostly fine but when looking at old pictures of him his fins looked a lot healthier before. I attached an old picture and a picture now. Is...

I set up a 10 gallon with plants(I believe this is called a silent cycle when you use plants to keep a healrhy tank) and a sponge filter. I recieved my OHM rose betta from Thailand just about one month ago. He has one clear pectoral fin that no one seems concerned about. He always breathed a...