There are a growing number of captive raised species available. Still, in the bigger picture, relatively few kinds of fishes are captive raised. There are some species that are collected as larvae and 'tank raised' - while not propagated in captivity, they are reared in captivity and as such, are better suited to aquarium life.
Dottybacks/pseudochromis, Cardinals - several varieties, and in the wild-collected larval varieties, some tangs can be found occasionally.
Jenn