Chromis acting odd????

[Ranger NRK]

So I just acclimated my three new blue/green chromis and im a little concerned about one of them. At first two of them hid together which I understood to be them just being scared and what not but the third would swim by himself and he stuck around with the clowns I have for a bit. Now, however, the two chromis school together and go all around the tank. the other one hangs by the back wall by my filter intake alone... its hard to get food to him and im hoping he will join the other two or come forward when he gets hungry but im not sure what to do.... should I go get another chromis so he can have a buddy or what? HELP

 

[ben canant]

how big is your tank?

 

[Ranger NRK]

30 gallon hex

 

[ben canant]

try adding another 3, i think he might just wanna stick with a bigger crowd. ive had problems like that

 

[Ranger NRK]

alright thanks I was thinking along those lines of adding more