Biologists Have Been Hunting For the Elusive Blue Crayfish Since 1975 in Ohio and Now They Have Finally Spotted One After 45 Years!

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A newly discovered crustacean in Ohio is putting the “cray” in crayfish as it was found following a 45-year hunt and, best of all, it’s blue.

The funky little crustacean is the first blue crayfish (Cambarus monongalensis) discovered in the region, with other populations and related species existing in West Virginia, Pennsylvania, Maryland, Kentucky, Virginia, Tennessee, and North Carolina.

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Biologists discover blue crayfish after 45 years search in Ohio. Picture: Laura Stalder via Facebook

It had long been believed that the Ohio River would be a barrier to the dispersal of the blue crayfish.

But that didn’t stop Ohio researchers collecting crayfish in search of the elusive blue species since 1975.

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Blue crayfish in Ohio? Yay! Congrats to the team!

It’s thought the small population found in Monroe County, Ohio, crossed into the area prior to Continental Glaciation and the formation of the Ohio River around 2 million years ago.

The elusive crayfish were finally tracked down on May 19, 2020, as part of an expedition led by Laura S. Hughes who had spent several years searching for the species as part of a citizen science project. 

As you can read in the Facebook post above: “Ohio researchers have been collecting crayfish in eastern Ohio searching for the blue crayfish (a.k.a. blue crawfish, Cambarus monongalensis) since 1975. On May 19th, an expedition led by Laura S. Hughes found a small population of the species in Monroe County, Ohio. It is now Ohio’s most colorful crayfish – and possibly its rarest!

blue crayfish discovery Ohio, blue crayfish discovery Ohio pictures, blue crayfish discovery Ohio video, blue crayfish discovery Ohio june 2020
Ohio researchers have been collecting crayfish in eastern Ohio searching for the blue crayfish (a.k.a. blue crawfish, Cambarus monongalensis) since 1975. On May 19th, an expedition lead by Laura S. Hughes found a small population of the species in Monroe County, Ohio. It is now Ohio’s most colorful crayfish — and possibly its rarest! Picture: Laura Stalder via Facebook

The researchers report that the blue crayfish had been hiding in hillside springs and seeps, making them difficult to find. Unfortunately, this puts them at a greater risk to changes in groundwater conditions. The team will now work to document the total range of the blue crayfish and determine its conservation status within Ohio, but it is currently listed as being of Least Concern on the IUCN Red List.

This blue crayfish is a pretty awesome animal find isn’t it? [Facebook, IFLScience]

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