Green chromis question

[fishcrazy2]

i have 4 green chromis and is always in the top left back corner of my tank he doesnt move at all hes eats then swims back to the corner he doesnt school with my other 3 chromis should i be worried???? i got him about 6 days ago
Any comments would appreciated

 

[superhero]

you are supposed to keep them in an odd numberd pair liek 3-5-or7 if im not mistaken

 

[big boy69]

I was always told odd numbers.
Maybe he's just an outcast.
Go get one more and make them all happy.
I love to watch my chromis swim around and goof off.

 

[fishcrazy2]

Alright man hahahhaa i love my chromis too