Sorry for the late response. Mine never ended up being the most prolific eating like most endli's would be, however, he seemed to be doing okay. Came home from work and saw him on the bottom. After netting him out, I noticed that his throat section bulging. I forced open his mouth to find it as well as his gills packed to the brim with sand. He is now in the freezer and an autopsy will be done later. Thanks all.