I think i figured out why my RES doesn't want to go into the water as much anymore. He seems to be a little bottom heavy when he goes into the water. He seems like he has a hard time staying afloat. He hasn't been pooing for a long time now. I think he might have swallowed gravel or something. I have sand at the bottom of my tank. I can still get him to eat a little every now and then. What should i do?



