The spotted is definitely more rambunctious than my albinos ever were, and after I added him the playing doubled in my tank. He does something funny that alarmed me the first time I saw it; he goes up to the albino and wiggles his whiskers across the other's body (it looked like he was eating Paul's fins). I initially was horrified thinking I'd managed to find the only killer spotted cory, but then the albino didn't seem the least bit alarmed. Turns out it's some display of affection which is just adorable. Mixing species definitely changed the behavior in my tank.