I am a new frog owner and I am not sure I am caring for these frogs correctly. I am also wondering if I have a pregnant one. They are in a small 1 gallon tank with air and filter. I am watching the ph balance. One has been on bottom all a long until today when it started floating near top at times. It was very fat in the belly. I am getting a bigger tank (15 gallons) as I read that is better for them. Any other suggestions or comments would be appreciated.