Thanks! I got them from Tropicorium which specializes in pairings. They have always had chocolates and blacks, along with a few other not so common strains. I've always wanted the chocolate with the orange nose. They didn't have any singles, then I saw this "pair" and thought how cool. No clue how long they've been paired.
Per babies, I doubt babies make it with other fish in the tank or do they? I've never really looked into breeding at all.