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Crayfish ID Help

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#1 AllenB

  • NANFA Guest

Posted 05 August 2016 - 08:26 AM



I am an invertebrate biologist from New Jersey working primarily with insects and freshwater mussels. While conducting surveys at a Lake in Warren County I encountered a large (approx. 3.5" long) bright red Crayfish. It was extremely aggressive. I am no expert on Crayfish but fairly familiar with the few species currently documented in New Jersey. With only a mediocre photo taken with my phone I have done some research after a fashion. I have tentatively ID'd this as Procambarus clarkii. If there are any Crayfish experts reading this I would be grateful for your thoughts and insights. This species is not on any of our official list.


Many thanks,


Allen Barlow

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#2 gerald

  • Global Moderator
  • Wake Forest, North Carolina

Posted 05 August 2016 - 08:36 AM

P. clarkii is a very likely suspect, and the photo looks consistent with that species.  They're the most popular species for farming and cooking in USA.

Gerald Pottern
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel

#3 Matt DeLaVega

Matt DeLaVega
  • Forum Staff
  • Ohio

Posted 05 August 2016 - 08:55 AM

I have found clarkii in a stream in Ohio that has a fish hatchery on it. I would not be surprised to see them almost any place.

The member formerly known as Skipjack

#4 CowBoYReX

  • NANFA Guest
  • Trenton, FL

Posted 05 August 2016 - 03:43 PM

From the lack of an areola between the two carapace plates I'd say it's most like P. Clarkii

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