RBTA died / gone after adding anemone shrimp

[iggy097]

So - after having my RBTA in my biocube for months now, it was healthy, large, eating, but the clowns wouldn't touch it.
Decided to pick up a white spot anemone shrimp from the LFS and it took right to the anemone.
Well, the RBTA wouldn't hardly open up anymore after adding the shrimp, and a few days ago it really started to look like crap, and today it's gone all together.
Water param are all good, all other corals/fish are doing great, any ideas?
Could the shrimp somehow have killed the RBTA by sitting in it? I never saw any aggressive action, it would just sit in the RBTA like it is supposed to.

The attached picture is from the day I introduced the shrimp.

 

[Azedenkae]

It is possible. Sometimes its the same with Clowns and anemones that are too small. The anemone would be smothed (or just stressed out) and do not feed as well and stuff. Eventually, it just keels over.