It’s hard to convey sarcasm online lol. Those are definitely aiptasia, but if you put a fancy name with it you can sell it!
As long as the aiptasia doesn’t get too large, copperband butterfly fish and peppermint shrimp will eat them, but the aiptasia usually spreads so rapidly that it’s hard for them to keep up. I have heard of people injecting lemon juice, scalding hot RO/DI or kalkwasser into the mouth of each one and it will kill it off.