ok little update, i have had this fish for around 8 months now. i switched tanks and cut down to a fusion 10g tank about month and a half ago. when switching tank i couldnt find one of them, and rarely even seen them in my 45g cube. these fish went into a 4yr old system. and switch to a smaller tank using existing rock and sand. i do not know what it eats, but it seems to still be doing well. as i see it alot more often as in new tank it stays in the back of the tank under and around a small over hang on the sand. stays in the shade. his belly is fat and other fish dont bother him