Hi, from all I can tell is that they enjoy each others company. I have 2 albinos, 2 bronze, and 2 emeralds. They all swim together in a pack like a crew of carpet cleaners swiming around each other all in a tight little pack with the occasional burst to the top of the water. I really believe that Corys are the perfect fish. Mild mannered, fun to watch, hearty and robust, and they seem to have a bit of playfulness and character that most fish seem to lack. And to top it off, they all seem to hang together regardless of type.
