Recently my Betta has gotten these red patches on his head, and I haven't really found much about a cause through google searches. Is this just his coloring or should I be concerned? I know Bettas can change color as they age... I was also concerned about his fins, as they seem almost twisted and are gray at the base. He did have what I think was fin rot a while ago but I treated him for it and his fins have grown back. I have attached pictures of him, but he's very active, so the pictures are blurry, sorry. Oh and also, from taking pictures up close I have noticed he has a few dark gray spots on his body. It looks similar to pieces of dirt? This one is about 2-3 years old and is one of the first I've kept seriously, so I guess I'm fairly knew to Betta keeping, at least in the disease aspect, so any and all help or criticism is appreciated! Thank you!