Frogfish health

[turkleton]

I have had my wartskin frogfish (Antennarius maculatus) for a few months now. He has been doing quite well, however he has only been eating live food. Recently he has been looking slightly bloated and moving around the tank less than usual, he also doesn't seem to be resting on fins like he used to. I'm not sure what may have caused this. His last meal was alot larger than is usual. Also I am not certain he has had a bowel movement while I have had him, but again I'm not 100% sure of this. Anyways if anyone has ideas or suggestions as to what may have caused this or how to fix it I would greatly appreciate it.