My Betta has been laying at the bottom of his tank since yesterday morning. I transferred him to his new tank the night before. I have him in a 10 gallon tank with a filter (current slowed down by water bottle in front of it), a heater, a few silk plants, a miss ball, and a little floating plant (both plants titled for Bettas). He will eat fine when I put food in and moved around for the net being put in when I was almost sure he had died. He won't even move when close to the glass when I tap it. His gills are moving slowly and heavily. He is now laying on his side.