Lol, I just wrote a few paragraphs of information responding to you guys, then my iPad died in the middle. Lol. I'll make it shorter this time...
Kalakuhan,
I'm not sure what happened exactly, the most recent crab didn't ever host my RBTA. But he was in the neighborhood. I noticed a couple times that the clowns scared him into a hole. Keep in mind, he was also missing an arm and a couple legs, so he wasn't ale to defend himself properly. Then a week later I noticed a few limbs sitting in the sand below the anemone. I hoped he had just molted, but haven't seen him since. I did have another anemone crab host my RBTA. unfortunately when my wife and I had our 1st child, I neglected the tank and forgot several feedings a week. Needless to say I lost the crab, 2 tangs, a wrasse and a lot of coral. I later discovered at I had a bad case of red turf algae that I believe my tangs were keeping in check until I stopped feeding and they died. It took me about 9-10 months to figure that out and get the tank back on track. Worry to get off topic. But that's how I lost the 1st anemone crab. Otherwise he and the clowns were perfectly happy sharing the RbTA.
Stevo9043,
That appears to be the same tiger shrimp I just picked up. He is pretty cool. He moved some sand the 1st couple days getting his home ready, but I haven't seen him in a while. He is hanging out quite a bit in his new hole. I'm attempting to host him with a yellow watchman goby (with little blue spots). But he keeps going into my overflow and is giving me a hard time. The tiger/tiger combination sounds sweet. Hope you have better luck than me.
Thanks to everyone for the suggestions, I think my next invert will be a fire shrimp. But I wouldn't mind trying a Randall's pistol shrimp either.