Are there any differences in these two fish? Does one seem to bo better in the aquarium trade than the other?
(Acanthurus japonicus)
http://www.liveaquaria.com/product/prod_display.cfm?c=15+43+367&pcatid=367
or
(Acanthurus nigricans)
http://www.liveaquaria.com/product/prod_display.cfm?c=15+43+391&pcatid=391
(Acanthurus japonicus)
http://www.liveaquaria.com/product/prod_display.cfm?c=15+43+367&pcatid=367
or
(Acanthurus nigricans)
http://www.liveaquaria.com/product/prod_display.cfm?c=15+43+391&pcatid=391