I am sorry about your CBB
My small female is doing well. Last Friday I got a larger male from Austin Aqua-Dome. He is doing well I got him into the tank at 3AM on Saturday. I was too tired to set up isolation. I told myself to separate them if Sat AM I see any fighting. No significant fighting so I just leave them together. He is not eating well yet but takes a few bites and picking at the rock and sand.
I hope he will start eating well soon.
I am very confident in able to sex CBB in person at this time. It actually very easy to pair CBB
Better luck next time.