Is it normal for Bangii Cardinals to host RBTAs? I recently bought two Bangii's and they live underneath or right on top of the Tentacles, sometimes touching the tenticles without even being stung. They don't move away from there. Is it for protection or out of fear or are they truly hosting my RBTAs? I want to lean towards fear/protection as my other fish are much larger and faster, especially my tangs (4 of them).