How bout taking a different view on this? How would you explain this if it was happening in your tanks?
Say someone falls in love with marbles. Gets a big tank, sets up ponds, and more tanks. Fills the ponds and tanks with nice Marbles and notices some grow much faster then others. They point this out to other hobbysists, and get ridiculed for "stunting" thier rays, improperly housing them in too small of tanks, not feeding enough, and running inadequate filtration. You know the typical raykeeper "insults".
This thread is no different then asking people if they believe in god. Some say yes, some say no. The people that claimed to have seen or have proof believe, others stay open minded, and others point fingers at the "crazies"
Anyone that wants to come take a tour of my basement and discuss this subject with me is more then welcome. Only after seeing what I have in person would I be willing to discuss.
As far as contributing to a thread that seems to take the standpoint that mini Marbles are a jackalope, tooth fairy, santa, unicorn, or bigfoot....... Good luck. Conclusion appears to have been drawn. Hope it's the one everyone wants.
The cool thing about raising imaginary rays is the fact that you'll have room for so many more then if you were to just keep "real" rays.......