[NatureNS] mystery fish

Date: Fri, 01 Aug 2008 09:35:30 -0300
From: "Andrew Hebda" <HEBDAAJ@gov.ns.ca>
To: <naturens@chebucto.ns.ca>
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&lt;div&gt;&lt;font face="Arial" size="2"&gt;Dartmouth&lt;/font&gt;&lt;/div&gt;&lt;/font&gt;&lt;/div&gt;&lt;/blockquote&gt;&lt;/div&gt;&lt;br&gt;&lt;br cle
They are somewhat similar to that of one of the Anglerfishes, but bot a complete fit.  Have forwarded the images to Dr Alfonso Rojo, retired ichthyologists specialising in fish skeletons and will pass on his opinion when available.

Andrew

A Hebda
Nova Scotia Museum

>>> "Randy Lauff" <randy.lauff@gmail.com> 8/1/2008 9:18 am >>>
Although bones and skeletons are my thing, I'm not all that good at
identifying fish. When Bernard wrote "The fish has some rather distinct and
menacing looking teeth" I immediately thought it was going to be one of our
Wolffishes. Although the structure of the skeleton resembles a wolffish (big
head on a flexible body) the front teeth, as best as I can see them, do not
indicate a wolffish (see http://www.fiskeri.no/english/Wolffish1.jpg,
http://www.lophelia.org/images/jpeg/1024wolffish.jpg).

In reality, the teeth on the fish in Rita's pictures are pretty typical for
fish, that is somewhat conical and often curved or bent back. The conical
shape for teeth is an adaption to eating slippery stuff (typically other
fish), and we see that style of tooth (with some modification) in other fish
eaters like alligators and some of the toothed whales. Mergansers have
similar adaptions, though they don't have teeth, but extensions of the bill
that form a similar shape.

The backwards bend to the teeth in the photo is reminiscent of snake teeth -
in both cases, prey that struggles and frees itself from the teeth can only
do so by moving farther back into the mouth.

2008/8/1 Bernard Burke <blburke@ns.sympatico.ca>

>  Hi All
>
> Rita Viau photographed some fish bones back in May along a Cape Breton
> shoreline that we are having trouble identifying and would appreciate any
> assistance. The fish has some rather distinct and menacing looking teeth.
> here are some photos:
>
> http://bernieb.smugmug.com/gallery/916397_ynXPk/5/48802225_gPjhG/Medium 
>
> http://bernieb.smugmug.com/gallery/916397_ynXPk/5/48802228_Th9z3/Medium 
>
> Here is a cropped version showing a closeup of the teeth:
>
> http://bernieb.smugmug.com/gallery/916397_ynXPk/5/48802231_gLtUb/Medium 
>
> Thanks to anyone who can assist.
>
> Cheers
>
> Bernard Burke
> blburke@ns.sympatico.ca 
> Dartmouth
>


Randy
_________________________________
RF Lauff
Way in the boonies of
Antigonish County, NS.

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