Thanks for the reply. I did a little research, and it seems it is the bicolor Blenny that is agressive and the LM Blenny is peaceful.
The bicolor blenny is already in the tank, and has been in the tank for about 4 months. He is pretty small, and the LM blenny would be about twice his size.
The bicolor may not pick on a larger fish. I do have about 100lbs of LR that they can hide from each other in.
I will give it a try. If it gets too bad, I will just take the LMB back the the LFS.
Thanks again