he is in a tank with a few danios, neons, and rasboras, a chinese algae eater and a rainbow shark. All the nitrates / nitrites are in safe or ideal ranges on the test strip. There are lots of live plants in the tank.
we feed him Hikari sinking wafers or Thera+A by New Life spectrum. Water...
We have a fairly large clown loach in a 29 gallon tank. I just took a good look at him and his belly seems much rounder / bloated than normal. He normally has smooth, full sides, with no observable roundness.
He also appears to be breathing rapidly, gills moving quickly and he is "shimmying...