HI Boo. I had a red boy with a black band on the tip of his tail fin. it was very beautiful! Something like you are describing is probably just a color marking. It won't hurt to watch it anyway, as Emg said...but don't treat what isn't broken! <img src="/images/graemlins/smile.gif" alt="" />
Did you find the betta journal thread? That's where all our daily posts go, and as Mel said, we like fresh meat... <img src="/images/graemlins/wink.gif" alt="" />