Fish and Wildlife Research Institute

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Blue Blood

Horseshoe crab blood contains hemocyanin (a molecule based on copper), which gives it a blue tinge.


Image Credit: FWC



FWC Facts:
The bowfin, or mudfish, is a ‘living fossil’ and is the only freshwater fish with a gular bone, a bony plate on the exterior of the lower jaw between the two jawbones.

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