I like looking up taxonomy on WoRMS sometimes for fun. I was looking up taxonomy around aiptasia and saw a genus in the same family called exaiptasia. I searched up pictures of exaiptasia on iNat and it sort of looks like the aiptasia in our tanks. I also looked up aiptasia and they seem to have a more bulbous appearance. Could the aiptasia in our tanks actually be exaiptasia?
Aiptasia couchii
Aiptasia mutabilis
Exaiptasia diaphana
Aiptasia couchii
Aiptasia mutabilis
Exaiptasia diaphana