[Coral-List] questions from a chef
lesk at bu.edu
Sat Feb 28 13:35:11 EST 2009
> I have some fish queries and was wondering if either of you might
> be able to answer them or find someone who can
> 1.Every once and a while, when I am fileting the New Zealand
> Snapper (Pagrus auratus) sort of a porgy or sea bream, there are a
> few that have these knobby bony growths on the bones between the
> spine and the anal spine, usually 2-3, progressively smaller
> towards the tail. They are round and smooth and look like big
> pearly blisters around the bones but are seamless appear to be
> bone. I have to cut around them and I lose some flesh. I would
> like to know what they are.
These are hyperostotic bones (see Smith-Vaniz, W., L. S. Kaufman and
J. Glowacki. 1995. Species-specific patterns of hyperostosis in
marine teleost fishes. Marine Biology 121:573-580). Hyperostosis is
a natural condition that is manifested at specific locations in the
skeletons of a variety of teleost fishes as individuals mature.
> 2. The past 2 pieces of Big Eye tuna that we have gotten have these
> flecks of hematoma closest to the skin. They are about an inch
> long and cannot be cut or cooked out. How does a fish get these?
> Poor handling, stress or other?
Not sure but most likely post-mortem.
> 3. I was butchering a wild sturgeon today (at least that is what
> the invoice says) and when I took the skin off I found what looked
> like a tiny LED light on my cutting board. About 3/4 of an inch
> long and the thickness of a Bic pen ink tube, It was clear on one
> side and black on the other and there was what looked like a tiny
> light in the clear side...sort of like a capsule. I don't know
> where else it could have come from. Could it be a tracking
> instrument or something? I kept it.
Without actually seeing it, that sounds a lot like an acoustic tag
with a daylight sensor...but not exactly, either. One thing to keep
in mind is that some of the sturgeon most likely to have our
contraptions in them are threatened and endangered species that
should not be showing up in the market. Aquacultured sturgeon may
have tech devices for ID or tracking but they are usually much
smaller than what you describe (e.g. pit tags). Send it to one of
the folks who respond to your query for identification. It might be
possible to figure out who stuck it in there. Where was the fish from?
> Thank you.
> Aurelie C. Shapiro
> Remote Sensing Specialist
> World Wildlife Fund - US
> 1250 24th street NW room 2015A
> Washington DC, 20037
> *new phone number* 202 495-4183
> fax - 202 293-9211
Professor of Biology
Boston University Marine Program
Marine Management Area Science
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