Very tiny Crab or shrimp living in my Favia coral mouth.

[3S1K]

I was feeding my corals today and I noticed something moving in one of the mouths of my Favia. I thought it was a tentical but it was moving in a more ripping motion.

I took a video and hopefully someone can ID it.

https://youtu.be/6TcfnR7FuSU

This Favia or Pineapple coral (not sure what it is) is all blue but I noticed 2 of the mouths were green. Never thought anything of it but this critter is living in the green mouth. It doesn't seem to be affecting the coral as I don't see any flesh recession in that area.

 

[aromano]

I think they are called Gall crabs