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It's my understanding that Bloody Marys get their redness from a different mutation than the line that has been selectively bred to give us the Sakura/Fire Red/PFR variants. This is why their redness comes from their flesh instead of their shells.

I started this thread so that newer shrimpers (myself included!) would be able to form a better idea of what level of redness they should be culling for to maintain their PFR colonies and how to tell when they find an exceptional male (since the standards for males are different than females).
Wasn't aware, believe they we're just cherry picked sakura/PFR to the point where a red flesh and physical mutations happened. Thanks for the info.
 
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