dorm-reefer-
Good info, but may I ask where you got this from. Its unclear on many gobies where the sexual allocation is. ie some gobies are gonochorism, while a majority are "probably" protogynous w/ bi-directional hermaphorditism, but this is still an unknown
I was unaware that any of these places are selling captive bred/raised (CB/CR) watchman gobies.
I know there are a handful of folks stateside (and prolly overseas as well), that are breeding them. But to my knowledge none of the commercial aquaculture firms (ORA, pro-aquatix, C-quest) have watchman gobies on their lists.
I think many of the neon gobies and a few of the smaller 7 spine gobies (green-banded, red-headed) are CB/CR fish, but i'm not sure that watchman gobies are