I got my betta fish in december and hes probably only a few months old since i bough him when he was small.
Ive kept him in a 1.5 gallon tank and just recently switched him into a 2.5 gallon tank with a filter in it, but I noticed when the filter is turned on in the water he is pushed up against the side of the glass and cannot swim around the tank. the moment i turn it off he can swim around again.
Does anyone else have that problem? What should i do? I know bettas need filters so this is getting to be a dilema =\