they are much more timid then normal jds. They are not very hardy and grow so painfully slow its unreal. They are general wimps when growing and hide when put with other fish larger then them. To breed them you need a blue gene regular jd and an ebjd. I believe the males are sterile most of the time. Some times they grow up and are very ugly, I have seen some incredible looking ones.
What else would you like to know?