Banggai cardinalfish stressing out coral!

[mushy coral]

I have a small nano tank with a banggai fish and some mushroom corals. Everything was fine until a few days ago when I introduced an elegance coral to my tank, and the banggai started to host in it, causing it to shrink. I have read that banggai do host on sea urchins and anemones in nature, but my tank is too small for those. Does anyone have any ideas on how to make him give up on the elegance? Any advice would be appreciated!

 

[akossard]

From what I’ve seen, Banggai cardinalfish like to stay in one spot, so if you move the coral a bit further away, there is a chance they leave it alone.

 

[mushy coral]

From what I’ve seen, Banggai cardinalfish like to stay in one spot, so if you move the coral a bit further away, there is a chance they leave it alone.

I've tried but it not worked, so I moved the fish into my macroalgae tank and now it hovers above my red grape algae lol.