Chromis and Fire Shrimp pair?!?

[Reefermatt3]

I know it's an odd thing to hear that a chromis and a fire shrimp pairing up. Recently I noticed that my chromis would go into the rock work where the fire shrimp was and sleep. Has anyone else heard of or seen anything like this?

 

[Betta132]

Probably he just likes where the shrimp happens to be, or it could be he's taking advantage of the free cleaning. Neither of those is a species that pairs up with other species.