Aquatic Invertebrates - invasive

Red Swamp Crayfish (Procambarus clarkii) on Sep 17, 2018

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

I spotted this Red Swamp Crawfish on 9/16/18 at Commonwealth Lake in Beaverton. I only saw one.

Commentary

Hi Michael,
Thanks for reporting! That looks like a red swamp crayfish to me. I am contacting THPRD to see if they are actively controlling this invasive crayfish or if it is too far gone to warrant control. I'll keep you posted. Thanks again and have a great week!
Kind regards,
Tyler Pedersen
Tualatin SWCD

Tyler Pedersen
Sept. 18, 2018, 1:35 p.m.

Hi Michael,
I followed up with THPRD and they are aware of the invasive crayfish. The population is pretty well established. I think people actually use them as fishing bait and that's one of the ways they are introduced (if they escape). Educating the public to not use them as bait may prevent the population from ballooning even more or spreading to other lakes in the area. Thanks again for reporting!
Kind regards,
Tyler Pedersen
Tualatin SWCD

Tyler Pedersen
Sept. 19, 2018, 8:34 a.m.