According to me your betta looks healthy and fine. I think it's just that it's fins are like that and it is in it's genes. There are a lot of betta fish colour morphs. If you google betta fish with clear/transparent fins you will find many photos. And you seem to have a nice tank with filter, heater and some live plants. I hope this will help you.freshwaterninja said:Why is my betta’s tail clear around the edges?