I'm still sticking with them being Black, they have too much yellow and Black in their barbels and lower fins to be Silver Aros. Look at the lower fins and the barbels on the two new pics I attached. My first Black Aro, looked like the picture dodgefreak/Hightimez posted, didn't have a yoke sack either. The guys I have seem smaller and younger than the one they posted and my first Black Aro. I'd like to hear from others who have seem or have had Black Aros with egg sacks. I'm pretty sure once they loss the yoke sack and putt on some size they will start to look more like young Black Aros.
MAn i fell for that too, the yolk sacked silvers that i thought were blacks, I am 100% sure they are SILVERS. but hey dont believe me or US all, just watch for a month yourself, and then lets see what you say. Regardless you got some nice fish, but now i think they were overpriced. Mine looked identical to that and was 17$. My dat ate it a day after it was introduced... i couldnt believe it...
stick with your thought but those are silvers..the black would be more prominent...plus look at the caudal fin of the blakc and then the silver ther different