Spotlight Species #9: Atlantic marsh fiddler crab

Spotlight Species #9:
Atlantic marsh fiddler crab (Minuca pugnax)

What to Look For:
Atlantic marsh fiddler crabs look very different depending on whether they are male or female. Both male and female are olive-brown in color. Males have a patch of royal blue on the carapace, females do not. Males are also larger (15-23 mm) than females (13-18 mm). Both have narrow eyestalks and dark bands on their walking legs. Males have one greatly enlarged claw that is often yellow.

Where to Find It:
As you may guess by its name, the Atlantic marsh fiddler crab can be found in - you guessed it - Atlantic marshes. Check out Huntington Beach State Park or the marshes of Winyah Bay for this species!

Why It Is a Spotlight Species:
The Atlantic marsh fiddler crab is the most common fiddler crab along our coasts. They are impacted by climate change as their range creeps northward with warming waters.

Posted on April 19, 2021 03:06 PM by waccamaw_riverkeeper waccamaw_riverkeeper

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