Hi, i had a 20G tank and a shrimp and goby pair, but the goby recently jumped after moving tank and not having a lid My LFS dont sell shrimp goby on its own. Do you think i can add another pair or one shrimp would get killed? Theres only one big tunnel in my tank so likely they will encounter. My shrimp isnt really shy and would come out to feed alone so is it better off leaving it alone? Thanks