vamptrev has had better luck than most at succesfully producing high quality black rays. Here's a sampling of threads to support his successful spawns:
http://www.monsterfishkeepers.com/forums/showthread.php?547592-Leoleohen-pup-Feeding-Vid
http://www.monsterfishkeepers.com/forums/showthread.php?546521-LeoLeoHen-Pups-Born-7-5-13
http://www.monsterfishkeepers.com/forums/showthread.php?499098-Pupdate-leos-and-leohens
http://www.monsterfishkeepers.com/forums/showthread.php?493673-3-leo-pups-born-8-2-12
This is an accomplishment that deserves recognition IMO.
http://www.monsterfishkeepers.com/forums/showthread.php?547592-Leoleohen-pup-Feeding-Vid
http://www.monsterfishkeepers.com/forums/showthread.php?546521-LeoLeoHen-Pups-Born-7-5-13
http://www.monsterfishkeepers.com/forums/showthread.php?499098-Pupdate-leos-and-leohens
http://www.monsterfishkeepers.com/forums/showthread.php?493673-3-leo-pups-born-8-2-12
This is an accomplishment that deserves recognition IMO.