I noticed Velvet was swimming in circles with his nose pressed onto the bottom. I was freaked out and thought he got hurt somehow or something, but it turns out that there were ants under his tank.
You see, the house we moved into had a big ant problem. It has been subdued by us, but it's still there. I had put a bowl of water next to the tank earlier to hold his plants while I did a water change, and I never put it away. Because he's in a kritter keeper, which has a raised bottom on tiny legs, there was a gap. So, 4 ants were running around under velvets tank and he ws trying to get them! I killed the ants of course.
Another cute thing! Today I just got some java fern and Anarchis and I'm floating it and my Bettas are both sleeping in the plants! Velvet was sleeping in java fern, but I can't see what Neon was sleeping in. These Bettas do the funniest things sometimes!