i highly recommend a roaops butterfly if you want an aiptasia eater that's more likely to be reef safe than not, especially with sps. the issue with them is they're kinda expensive (burgessi you can find for maybe 100-200 if you get lucky) and they'd prefer a bit cooler water since they're deepwater. and burgess is kinda dull looking if you want vibrant colors
roa and prognathodes are similar, but they're even deeper, sometimes uglier looking at you aculeatus, and more expensive. You’d probably really want to keep temp at like 74 or below for them. Roaops maybe a tinge warmer like 76-77
or just one of those hideous little aiptasia eating filefish