I have had my ACF for about a year and he has been incredibly healthy and has gotten very large. But over the last few days I have noticed he has had trouble staying at the bottom of the tank. Tonight he is floating right at the surface and though he can still dive down to the bottom he floats right back up again. His abdomen appears to be a little bloated.
The only thing I can think of that I have changed lately is to give him some freeze dried shrimp over the last week or so.
There is a second frog in the tank that seems to be fine, although he always has been much smaller and does not end up eating nearly as much as the first.
Can anyone help with some ideas?

