I have a certain guyana male that gets much darker when he is stressed. I have been wondering if color change can be induced by stress in other individuals. He only stays dark for a few hours or a day then he lightens up again, and he has never been severely stressed like the ones you showed. It isn't a permanent change. Were these bcl's in a permanent darkening, or do they change back again? Their stress was obviously great, maybe that's why they stayed so dark?

Thanks for the very interesting post.
Caden

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