Okay I just seem to have a floater here. I've taken the betta out of the community tank. Put him in his own little tank with no flow. He just can't seem to stay submerged. Whenever he tries to get to the bottom he just floats right to the top. Just a possibility but do you think from staying at the top his fins may have slightly filled with air or something? I can't find any other cases of this. He also seems very healthy and eats no problem