Quote Originally Posted by sparks19
I have also heard that male bettas are likely to attack any type of fish with long flowy fins. they like to be the prettiest ones in the tank

It is neat to have a female and male side by side where they can see each other.... it really promotes "bubble blowing" but I have heard that you should not keep them in the same tank for any kind of extended time either.

they also do better without a filter if there is not a place that they can get away from the current. If you have a place that they can get behind or inside that isn't affected by the current they should be fine but they do need to rest on things so having a filter can sometimes be difficult on them if they have no motionless refuge area.
I never knew that about either the bubbles OR the filter! Thanks!