Who's chomping on the Cleaner Shrimp's antennae?

In article zdMLb.29169$WQ3.9652@lakeread05,
"Richard Reynolds" wrote:

coral beauty's are IME not coral or invert safe. yellow tangs will
eat shrimp and nip at some corals,

I initially suspected the Coral Beauty, mostly because he's *very*
active, and the tang...? No way! He's so peaceful and friendly - he and
one of the Chromis forage for uneaten food together at the bottom. One
will pick it up and the other will taste it, spit it out, then let the
other take it and go on to the next bit. They alternate. I'm amazed to
see this.

But since I've been watching closer, I'm afraid it might be the tang
that's hassling the shrimp. When he first went in the tank, he "made
friends" with the shrimp right away, presenting himself for cleaning
quite frequently, and the shrimp were glad to oblige.

But last night, during twilight, both shrimp came out (cautiously), and
the one with the stubby antennae had nice, long, newly-molted ones!
However, when the Yellow Tang came near, both shrimp shied away and went
deep into hiding. The tang hovered near; I couldn't tell if he was just
looking for a cleaning or a snack! But neither shrimp would have
anything to do with him...

Which figures. Because the tang is the one fish I don't want to get rid
of!

clarkii can be evil when they want to establish teritory terrorizing
fish/inverts regardless of size,

Yes, I think they're going to feel my boot. Figuratively. I'm thinking
of taking them back to the fishstore from whence they came. Nasty little
buggers - the poor Yellowtails are showing signs of vicious nipping
wounds and fungus; both their tails are down to nubs... even the
Chromis, fairly large themselves, are showing signs of harrassment.

So much to learn...

Thanks for your help,

--Charlie Henderson