peacock flounders (Bothus lunatus ) need a real dsb. they arent very hardy and need real good water conditions. they can be picked on by more agressive fish----i guess that answers the question. they will eat meaty foods. need at leats a 125. if you want a fish to keep your sand bed looking clean, get a lunare wrasse. mine is in and out of the sand bed all the time. the best way ive found to keep the sand bed clean is do it your self! its easy and doesnt take that long. i clean mine atleast once a week. bo