Blue crawfish?

Question: I was just wondering if anyone knew anything about blue crawfish? I live in southwest Florida, and I have caught 3 crawfish that were brown and put them in my aquarium, with blue rocks, and all three of them turned blue, 1st one dark blue, 2nd and 3rd turned very pretty light blue. Then I put the dark one in another tank with black and white rocks, and a while later now he is brown again, but still has dark blue claws. Did they turn blue because of the rock, or do they turn blue in any condition whenever they feel like it? I have seen blue ones for sale for about $20, if you buy one is there a chance that they will change back to brown if you do not have them in blue rocks? Is there a way to make them turn blue or make them a pretty blue?

Answer: here in beautiful Louisiana...crawfish capital state of the world... I know all about crawfishes!!!!!! alots of red ones but few blue ones. if u find a blue one..its good luck..nothing wrong with it..its just special.

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