Watch a rare blue crawfish display its vibrant color and territorial instincts during a dramatic breeding confrontation. This up-close look at crayfish behavior reveals how competition, courtship, and ...

The river roars in the heat of the summer. The water is clear and cool, and a respite from the high sun. An angler leans back ...

The river roars in the heat of the summer. The water is clear and cool, a respite from the high sun. An angler leans back, ...

In this episode, we talk about why crayfish are important to creek ecosystems, and also test just how strong their claws can ...

It’s crayfish season in Louisiana, but the Pacific Northwest is receiving all the crayfish spotlight. Researchers recently discovered two new species of the crustaceans: the Okanagan crayfish ...

The Grey Sloan doctors stayed on call for this one. When Denzel Washington directed an episode of the long-running medical drama “Grey’s Anatomy,” some of the female actors were ready to get ...

Rusty crayfish haven’t been found in many parts of western Pennsylvania where there are rare native crayfish species the agency wants to protect. They have, however, been found in Lake Erie and ...

Now, Grubh and other researchers are investigating just how far the crayfish have spread throughout the Rio Grande Valley, but they don't have an answer yet. Each female can lay up to 5,000 eggs a ...

Using measuring devices stationed in the back of her car, Dr O'Hea Miller discovers a crayfish that is both male and female. "You do get an occasional unisex individual.

However, she added that the work was not intended to specifically depict female anatomy. The sculptural quilt combines a copper frame with layers of wool fabric, silk, and beads in various shades ...

Some female animals can reproduce without males through a process called parthenogenesis. Here are a few examples.

A blue-form adult female dusty crayfish (Figure a). A purple-form adult male (Figure b). CREDIT: Jiří Patoka. Dusty crayfish generally have smooth bodies, large eyes, and claws.