Identify hitch hikers please

[Ivy]

had some once, and I just removed the rock and applied boiling water to the little bugger. That got rid of it and did not harm the rock. I applied the water to the Aiptasia without putting it on the rest of the rock.

Hmm I may try that. I'm still cycling my tank. (Ammonia hit zero
yesterday, yay! Now the nitrites have to come down from an
alarming .8)

Will peppermint shrimp eat HUGE aiptasia?

Speaking of rocks, is it ok to rearrange the liverock? The lfs told
me never to touch them once they were in the tank except for
treatments.

tia
Ivy