they observed no examples of brightly colored crayfish maintaining their colors as they evolved to have more aquatic ...

At first glance there isn’t much difference between the color of lobsters and crayfish – crayfish are dark blue, green, or black, while lobsters are greenish-blue or greenish-brown.

New Yorkers looking to find an elusive blue crayfish will have to travel, albeit not far. Cambarus monongalensis are native ...

Color variations are common in crayfish, particularly blue, red, or orange. Everglades or Florida crayfish sometimes have blue patterns, and captive-bred individuals are often a vibrant blue.

A new critter is creeping into the United States' waters. The invasive Australian redclaw crayfish has been spotted in southern Texas, roughly 8,000 miles from its home. The freshwater ...