Corydora school size

I will be getting 4 soon, maybe 5 :)
 
I have nine i believe in my 55 they don't really school per se but they have hang out sessions where it looks like they're sitting around chatting - hahaha - but then they go off scavenging in small groups or on their own - i have mostly albinos but then i have one lone panda i bought cause he was all alone in the lfs tank - i figured he'd be happier with my group - he does hang out with them but he is certainly a bit of a loner when he wants to be - the others for the most part are always aware of where each other are - i've got to say they are quite an entertaining fish and yes you can mix cories they will hang out together - be sure to get some sinking food for them!
 
I have 3 each in my two tanks, I'm thinking about combining them. The 3 in one tank that i bought at the same time are always together, and in the other tank the two that I bought at the same time are always together, but I have an albino ( the other two are some sort of spotted color) and he is the loner. I'm not sure if it is b/c of color, or previous companionship!!
 
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