We are relatively new to having a betta fish, so we have ours just in a small betta bowl with rocks and an artificial plant. It has been doing fine for months, but recently it started burrowing down into the rocks and just hanging out there all day. Its mouth will be in the rocks and it looks like he is standing on his head. Then the last couple of days he has stopped eating. Something most be wrong. We changed his bowl recenlty to a bigger one, could something have happened there? I think I might have been changing the water wrong because I had been doing 50% water changes weekly. Any help would be appreciated.