What's this creepy thing?

[jason604]

Couldn't help but to destroy it during a water change =P. anyways I'm starting to have more aiptasia multiplying. Tried the injecting like juice into it with a syringe but this is extremely difficult cuz they just retreat into the LR holes as soon as I touch them. I don't want to use any chemicals. Am I able to get a peppermint shrimp if I already have a blood red shrimp,cleaner shrimp n coral banded shrimp in my 75g tank?