Advice on my next fish addition

I am going to my LFS in the next few days to add a new fish to my reef tank. 36 gallon bow front. I have a scooter blenny and an ocellaris clownfish. Hermit crabs and some snails. I am considering another clownfish. My current one has been in there for about 2 months. If I add a smaller clown, will there be a good chance of them getting along? I don't want to add a clown and have my current one kill it.



If I don't get a clown, I would like to hear some recommendations. I would love to add some color. Yellow or blue. I don't have a top on my tank so I don't want a jumper. Obviously need a reef safe fish and would love to hear opinions.



Please help

Thanks