My cleaner wrasse always cleans me too...I am used to that and barely feel it but I don't like the feeling of the yellow tang biting. He pulls on the hairs on my arms too. When I push him away, he just comes right back and keep biting.
My rabbitfish has stung me once before because he is also very friendly. I don't know, all my fish seem to be friendly except the small ones. They stay away.
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