Tony, you are right as usual. The Potters is from Hawai and the Rusty is from the Indo-Pacific.
The distructive behaviour is probably their tendancy to nip at corals.
I would think if they are well fed they may not nip.
According to Scott Michael's Marine Fish the Potters is ranked as a green/yellow, whereas the Rusty is ranked as a yellow for aquarium suitability.
Yellow = these species are moderately hardy, with most individuals acclimating to the home aquarium if special care is provided.
Green/Yellow = these species are generally durable and hardy, with most individuals acclimating to the home aquarium.
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bye for now, Kim.
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