This morning, he ate some pellets. I haven't noticed anymore darting or lethargy, but I can't watch him as closely as I would like. One of my cats was trying to climb up the cabinets and onto the counter to get at him, so I moved him to a room the cat doesn't go in. Unfortunately, that means he isn't in a room that I don't spend much time in. Granted, I do go in much more frequently when I have a fish there.
I'll see if I can get some pictures of him today. If I can, the quality probably won't be very good. The lighting where he is isn't too good and the only camera I have is the one on my phone. Usually, the tank light helps, but he's in a bowl I used to make transporting him easier so there's no tank light to help.
But it does seem like he's doing better to me.