Dono - I always maybe incorrectly assumed that you had papershell crayfish (PSC) as your main pond crayfish species. Let's try and figure out exactly which species thrives in your pond. Since you stocked hundreds of crayfish collected from your local stream you could have easily added two or maybe 3 different species depending on how many crayfish species inhabits your stream. Obviously one of them liked the conditions of your pond where it thrived. You could have 2 species of crayfish breeding in your perch pond.

If you have some good close pictures of the claw placed flat and a close picture of the nose (rostrum) shape and one of the carapace- back with seams middle area (areola) I should be able to produce a good species name. You may also have the clearwater crayfish?

Northern Cray in Ontario
http://www.pinicola.ca/crayfishontario/ovirilisacct.htm

Papershell in Ontario
http://www.pinicola.ca/crayfishontario/oimmunisacct.htm

Clear water cray
http://www.pinicola.ca/crayfishontario/opropinquusacct.htm

Crayfishes of Ontario
http://www.pinicola.ca/crayfishontario/craydentpage.htm

Last edited by Bill Cody; 12/31/16 07:42 PM.

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