Yeah I heard that about the males, but the long spiked fin doesn't start to grow out until it's an adult, correct? That's why it's hard for some to sex. I've had my male for 6 months now and my pod population is quite out of control. And by out of control i mean hundreds if not thousands on just the glass alone daily. I recently added my sump and some cheato so I can see the population growing stronger. This is why I feel confident that my reef could support two. I've tried looking up information on this but have seen mixed reviews. I know the possability for aggression still exists I just want to know if anyone here has had success. My tank is completely non-aggressive now since the removal of the clowns and nothing else has the same diet.