Are yellow tail blue damsels nippers

[Steviereefs]

Hi,
I go against the grain because I love blue damsels especially the Fiji blue damsel as I have had a lot of success with them. Now I have this yellow tail and he has been great but I've caught him twice nipping polyps and it pisses me off because he's not a big jerk minus that. Are they known to nip sps polyps?


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[Steviereefs]

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[nemodan]

I have 2 in my SPS tank. Never bother any coral at all. But one is the owner of a corner and she/he covers with sand or try to move whatever coral I place in the corner.