I got my first ever (male) betta yesterday (eek) and want him to be able to interact with other fish. I know there are several compatible options but I was wondering if perhaps I should wait until he has properly settled in and how long that would be.
Another thing is that he is still quite small, only between 6 and 7 weeks old according to this: http://www.waynesthisandthat.com/bettagrowth.html
Should I wait until he is at least as big as his potential companions before introducing them? I don't want him to be bullied or dominated (as the companions would be there for his benefit), especially if this means that when he grows bigger than them, he will have to overturn the hierarchy, creating trouble for everyone.
The tank is 24L / 6.3 US gallons / 5.5 UK gallons.