I have a 10 gallon tank with 3 mollies, 3 cories, and 1 dwarf gourami. I have 2 spotted cories and 1 green cory. I just got the green cory and 1 of the spotted today. The 2 spotted cories hang out, just like a small school, but the green cory doesn't seem to want to be in a school. They'll cross paths, but won't the he won't follow the two like a school should. Cories do except other types of cories, right? Is this normal?
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