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And dont be worried of the spot on its eye, its actually the remenants of some GSA on the glass, I verified it with some other pics I took in the same location (was a bit worried at first!).
At first I was worried that the flourite gravel might be harsh on them but after a while never did see any signs that the gravel was scraping them or anything, no warn barbels best I can tell. Then again most the tank bottom is covered in plants except a few spots which act like passages for them.