I got home from being out for a few hours to find that my betta had a little dot on his head. It is almost as if he smashed up against something. I hope that is the case..that would be the lesser of two evils. I hope it isn't some sort of sickness or growth or something. I tried to take a picture...taking a clear shot of a fish is next to impossible.
Also, here is a picture of the 2.5g tank. He really likes that little turtle thing, maybe he scratched his head on that?
I'll continue to try to take a more clear picture.
Also...that build up of bubbles at the top of the tank. Is that bad?