Atlantic mangrove fiddler crabs are found 200 miles north of their historic range, expanding due to warming ocean waters.

The fiddler crab has one small claw and one big ol' one. Why? All the better to woo the lady crabs and throw down with the dude crabs. And this big crab's like, No, check yourself. And this other big ...

Male fiddler crabs are lopsided, with one claw that seems about the right size and one very large claw. As you might expect, one function of the larger claw is to attract females. The males drum with ...

Supreme fitness is a trait males of many species might show off when searching for a mate. Peacocks display their tails, the more elaborate of which require more energy to grow and carry around. Human ...

SYDNEY — In the world of fiddler crabs, the best form of protection is, apparently, prostitution, according to an Australian study published Wednesday. Researchers from the Australian National ...

Nine years ago, I stood on the muddy banks of the Great Marsh, a salt marsh an hour north of Boston, and pulled a thumb-sized crab with an absurdly large claw out of a burrow. I was looking at a ...

For the first time, a study led by University of Oxford researchers has listened in to the fascinating courtship displays of fiddler crabs using geophones. The findings, published in the Journal of ...

Fiddler crabs in mangrove forests eat and degrade microplastics into nanoplastics, offering clues to the "missing plastic ...

Male banana fiddler crabs take courting to a new, and pushy, level: The little Australian crab males wait for females to enter their burrows and then trap them in order to mate, scientists have found.

The male European fiddler crab attracts his mate by performing a courtship dance. New research says that dance isn't just notable for its visuals — it's notable for its vibrations, too. During ...