On Tue, 2008-12-02 at 10:32 -0800, Pay_the_Piper wrote:
> For the sake of layman discussants, are you saying that Arctic cod come in 
> fresh and salt water varieties?

Arctogadus glacialis?  Definitely not.  The cods (family Gadidae) are of
marine evolutionary origin.  At least one extant species, Lota lota, is
adapted to fresh waters and, to the best of my knowledge, they occur
only in cold-temperate, boreal and subarctic fresh waters.  

Cheers,
Steve

> ----- Original Message ----- 
> From: "Steve Gutreuter" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, December 02, 2008 10:25 AM
> Subject: Re: [IOBB-IBS-FORUM] Re: cray fish and freshwater clams/mussels
> 
> 
> > On Tue, 2008-12-02 at 10:10 -0800, Pay_the_Piper wrote:
> >> It is intriguing to consider the economically valuable species which seem 
> >> able to adapt to either salt or fresh water:
> >
> > <snip>
> >
> >> What about cod? Are there fresh-water cod?
> >
> > The Gadid Lota lota has a circumpolar distribution about the northern
> > hemisphere, with several subspecies.  I have always been puzzled about
> > why the North American Lota lota never drew much interest at the dinner
> > table.
> >
> > -- 
> > Steve Gutreuter
> >