Gecko Gobies

[pkrz]

I asked this question under "advanced topics", realized I should have posted it here, under marine fish.
I have two gecko gobies in separate tanks. I am going to put them in my new 75gallon. Should I introduce them at the same time, or a week or two apart? The tank is new, but has completed cycle. Current residents are two black ocellaris clowns, a damsel and various inverts, snails. I was unable to find anything online about pairing these guys.

[SDguy]

I added one to an established one. They paired, and bred. I have no idea if I was just lucky, or if they can change sex, or what.

[pkrz]

Looks like they can change sex, mine paired without any issues. The dorsal fin on the male took on a different shape than that of the female. The female is now pregnant and about to pop. Ever get any of the young to survive?

[SDguy]

Never tried... I don't even know how they lay the eggs. Do they stick them somewhere?