I've had the female for 8 years, and the male for 1.5 years now. They've been laying eggs for the past year, starting last January actually. After the eggs are laid, they usually release within 7 to 8 days, late at night.
Of the thousands of eggs I've seen laid, I've only seen one clown fry swimming in my reef one night, and it was briefly at that. I just happened to be watching the tank with a flashlight and saw the little 'comma'-shaped fry for a few seconds.
They must be raised in a separate tank in total darkness, fed 5x per day for the first 2 weeks, which I hope to attempt sometime.