I have a pair of bettas in a tank with other fish, snails and plants, including floating lily pads that are partially submerged, and they have been living in there for several months. For the last week, the female betta has been laying on her side on the biggest lily pad when I get up in the morning - not sure how long she has been there each time. As soon as I see her I flip the lily pad and get her submerged back in the water, but each morning she is back on the lily pad. Otherwise she acts normally and seems healthy...I have never seen a betta or any other fish do this (and survive half out of water for what could be hours at a time). Anyone else ever seen this before or have an idea why she does this?