I won 8 of these in the raffle last night.
They are settling in well.

More pics later.
I have been reading a bit more and some say they may or may not spawn in shells? Josh or others who've had them, what's your experience been as far as a good setup for their tank? I have them right now in a 10g tank (they are about 1-1.25" in size)...should be fine for growout correct?
I was thinking maybe a 24x12 plus sand etc long term. I know a group might do best in a 30x12 or even 36x12 when full grown...but if I want to end up with just a pair, what size might work well for that goal?