More than one pistol shrimp?

Armando

v 4.0
I have a bullseye pistol shrimp that is really cool but bullseye shrimps do not pair with gobies.

I thought about getting another, non-bullseye pistol to pair with my goby. Is one shrimp going to kill the other?
 
I really don't know...I do have 2 A. Randalli (candy cane) pistols in my 20L and although I hardly see them I don't think they bother each other. They are tiny though.
 
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