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I have had them here for over a month fully QT and all are eating. Those that have been in the store, its the ones in the 8ft ray tank with the Discuss.I would QT them for several weeks before placing them with an established ray. First to get them eating on a variety of foods and second to be sure they are healthy and wont' contaminate the established ray. Also if the Motoro is larger then it could stress and/or kill the new import.