A Rockmover Wrasse or Dragon Wrasse, Novaculichthys taeniourus, putting on a display for the photographer (a.k.a. me). These wrasses move stones to reveal and, ultimately, eat the prey beneath the rock. Adult rockmovers are known to work in (mated) pairs, the first wrasse lifting the rock and the second wrasse darting in to eat the revealed morsels before they scurry under another rock. Clearly, it behooves the potential prey to find a big, heavy rock to hide under!
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