I don't know if anyone has yet crossed the homozygous versions of any of the lines yet. Maybe as they get cheaper someone will be willing to do this experiment.

The original (only?) cross to test compatibility between VPI and TSK lines was a het VPI male that had changed hands several times to two TSK het females producing two clutches of 7 eggs each with no axanthics hatched but that's 6 year old info so maybe more is known by now.

I believe Jolliff did some kind of cross with VPI proving those two incompatible but I don't remember or never knew the details.

I'm completely out of the loop on the newer lines. What does "D&M" stand for and can anyone confirm it's compatible with TSK? Has the NERD line been crossed with any of the others?