I got a used, practically brand new, 20 gallon tank. I have decided to use that as my sorority tank, instead of the ten gallon. I still have some things I am still not sure of, though.
What is a good number of females to have?
When I get new females, do I leave the current females in the tank and just rearrange?
Would it be better to get the number of females I want then add them all at once?
Is it okay to add three females at first, then say three more?
Also, some say it is better to add the aggressive female last, how do I know which one is the aggressive one?
P.S. I might have more questions later on.