01-31-2011, 02:55 PM
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Assuming that by "schooling" you means swim throughout the tank together in a group formation, the answer is mainly no. But will they mingle, yes.
Shoaling fish are not strictly speaking schooling fish like many marine species. Freshwater fish that shoal must have a group, six is usually considered minimum, but the more the better. It adds security, which reduces stress and possible aggression [even in "peaceful" fish], and some species have social interactions within their group. They may sometimes swim together, many times not. Other similar species may sometimes join them. Quite often they just "hang out" somewhere, and fish frequently have their favourite spots dependant upon light intensity, water flow from the filter, plant or other cover, and other species in the tank with behaviours that influence them somehow.