i had one in my reef and when i could actually find it, i never found anything to be troubling to my tank. at no point did i ever think he was harming my corals. i have found the inverts in my tank just like to perch atop my coral.
when veiwed closely my sallylightfoot crab was "picking" at coral (different species iknow, but they exhibited the same behavior on coral) its seemed more like it was cleaning than hurting.
do you feed flake food? it looks white or transparent after a while. Moulting of some sort?
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72 Gallon Bowfront Reef.. Hardware:2x250w Luminex Elite HQI Reflectors (Phoenix Hexarc Bulbs), Galaxy 2x250w Electronic ballast, Euroreef 130 Skimmer, Sedra KSP 7000 Retern... Live Stock: Pair of Hawaiian Flame Wrasse, Leopard Wrasse, Pink Streaked Wrasse, Pair True Percula Clowns, Potters Angel, African Flameback Angel, Orange Fin Tomini Tang, Yellow Assessor, Tailspot Blenny, Purple Firefish..
45 G FW Asain Barb Community tank.
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