i have removed my red/blue dwarf gourami from my main tank as it was lying on its side at the bottom of the tank flapping. now its in a much smaller tank in isolation because i have no idea whats wrong with it. it seems to have perked up a bit, and is now upright but still not doing much. i only got it on tuesday, and its seems to list to the side for a bit every so often. what do i do?