Clownfish pairs

I order a 2" snowflake clownfish from L.A. I currently had one plane Ocellaris clown that was 1". L.A sent me a 1" snowflake clownfish:mad: I have noticed my Ocellaris clown twitching on his side next to the other clown, Is that a sign of matting? Or should I take him back to my lfs and order another 2"! clownfish if I want them to pair.