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🔵🔴 Why are some crawfish blue? And why, when you boil them, do they turn red? Crawfish get their color from a mix of natural pigments, including one called astaxanthin—which is bright red—and others that mask it. In some rare crawfish, there’s a genetic mutation that causes them to lack the usual dark pigments, so the blue shows through. When you boil them, the heat breaks down those masking proteins, leaving only the red pigment behind. That’s why even a blue crawfish turns bright red in the

🔵🔴 Why are some crawfish blue? And why, when you boil them, do they turn red? Crawfish get their color from a mix of natural pigments, including one called astaxanthin—which is bright red—and others that mask it. In some rare crawfish, there’s a genetic mutation that causes them to lack the usual dark pigments, so the blue shows through. When you boil them, the heat breaks down those masking proteins, leaving only the red pigment behind. That’s why even a blue crawfish turns bright red in the

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