In addition to a yellowhead sleeper goby that's constantly sifting and digging, I've got a couple of sand-sifting stars in my tank. They do a terrific job of keeping the sand bed clean. My 90 was wall to wall spaghetti worms, now it's nice and clean. And the wrasses don't seem to bother them. I think the Diamond Goby in my 55 is more industrious than the sleeper though. That guy's a bulldozer.
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Whoa, what's that??!! I didn't buy that. Where did it come from?
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