Size Comparison: Hair and American signal crayfish

On this page you compare the exact size of Hair with that of American signal crayfish (also known as Columbia river signal crayfish, Klamath signal crayfish, Pacifastacus leniusculus) true to scale.

How big is American signal crayfish?

Learn the true proportions and dimensions. Here, American signal crayfish reaches a size of approx. 5.91 in. With our interactive tool you can place American signal crayfish directly next to Hair to get a perfect feel for the actual size.

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