I have a black snowflake thats been in the tank little over a month, very docile doesnt get scared when i have to put my hands in the tank just stays where its at. Recently added a fancy oc that i had taken off a friends hands (mostly black suprisingly) that is a little smaller than the resident snowflake. Only been a few days but they are dancing with each other the snowflake seems to be the nippy one so far wont leave each others side. Just wondering any insight or experience with mixing species. Thanks