Yes we have caught a few of them on the mighty ottawa river,my buddy who is from deep river,and his father and grandfather have been fishermen & log drivers on the ottawa river since the turn of the century,and they kept trying to tell the MNR whos head office is in pembroke that they had caught a few small blue walleye,in the river,till they finnally kept a few and took them in to the office to be verified,and they were blues....him and myself have caught a few of them,but i have not caught one in about 10yrs,i will look for pictures i have they are on film,so if i find them i will post for everyone to see,i do think that they are still there,and for whatever reason they are only about 1-1.5 lb fish from what i remember...cheers