Hey guys! I bought 3 ottos a week a go and they were all doing fine.. but today one is acting very strange. He is lying on his side, swimming up and falling down. Ive been watching him for the last hour and i just had to turn the filter off because he got stuck to the intake bit.. everyone else in the tank is fine ( 6 Serpae, 6 Haelquin rasbora and my SAE ) Im pretty sure he isnt going to make it.. I don't have a QT tank.. should i take him out now? he just got stuck to the filter again! water tests NO2 0.0 NO3 <10 cant test for amonia (long story) so take him out or leave him in?