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Re: filming nocturnal fish behavior


Baldur Sigurgeirsson <[log in to unmask]>


[log in to unmask]


Mon, 12 Feb 2001 11:32:18 -0000





text/plain (1 lines)

Dear Mr. Rountree
I saw your note on the list. We are specialising in electronic fish tags
used for behavioral research. We call these Data Storage Tags DST. The DST
is able to store up to three parameters simultaneously into an internal
memory. Data is uploaded from the tag with the use of the upload box and
software from Star-Oddi. All measurements are time related. Available
parameters are temperature, depth, salinity and tilt angle. The smallest
DST we have now is 13mm in diameter x 46mm in length. We have developed a
smaller tag that is 12mm x 32mm. This tag will be available in May 2001 and
is re-usable as long as battery lives (battery life is ca. 3 years). Do you
think that the DST could be useful for your studies? I would like to send
you the DST brochure if you are interested, please let me know.

Yours sincerely
Baldur Sigurgeirsson

Star-Oddi Tel: +354 533 6060
Vatnagardar 14 Fax: +354 533 6069
104 Reykjavik Email: [log in to unmask]
Iceland Web site:

We are exhibiting at OI Americas, April 3 - 5, 2001, stand number 722. For
more info visit

-----Original Message-----
From: Scientific forum on fish and fisheries
[mailto:[log in to unmask]]On Behalf Of Rodney Rountree
Sent: 3. febrúar 2001 14:31
To: [log in to unmask]
Subject: filming nocturnal fish behavior


I am planning to conduct a study of fish behavior in a 57,000 liter tank and
am interested in comments on the best type of lighting to use for night
observations. I've used IR in small tanks, but it is not adequate in such a
large tank. I've also used red lights in smaller tanks but will probably
have similar absorption problems in the larger tank, plus it is my
understanding that fish can see in the red end of the spectrum. I've also
heard that green lights can be used, but am unsure as to there
effectiveness. One alternative is to use white lights at very low
illumination and a low light sensitive camera. Can anyone advise me as to
their experiences with different lighting? Needless to say, I'm trying to
obtain observations of behavior with as little disturbance as possible.

Please email your response directly to me at the address below, and thanks
in advance for your comments.

Rodney Rountree, Ph.D.
Adjunct Assistant Professor
Dept. Natural Resources Conservation
48 Oregon Rd.
Mashpee, MA 02649
(508) 477-5140
[log in to unmask]

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