Re: Can Fish Hear, And Do They Recognize Their People?
- From: dr-solo@xxxxxxxxx
- Date: Thu, 13 Mar 2008 09:09:41 -0600
water is a better conductor of sound than air.
"We know very little about whale communications. That is why we are looking for
patterns of association and coordination. The problem is that the whales are spaced
so far apart," says Clark. However, the SOSUS system is providing a wealth of new
data. In weeklong soundings at the U.S. Navy's Joint Maritime Facility in St. Mawgan,
Cornwall, England, Clark has obtained thousands of acoustical tracks of singing
whales for the different species throughout the year. "We now have the ability to
fully evaluate where they are and how long they sing for," he says. "We now have
evidence that they are communicating with each other over thousands of miles of
ocean. Singing is part of their social system and community."
Goldfish and koi have regular ears as well as the lateral line sensitive to changes
in water pressure. one of the reasons we never bang on ice or it will shock and/or
kill the fish. http://www.coloradokoi.com/koi_hearing.htm
http://jeb.biologists.org/cgi/content/abstract/61/1/243
http://www.ncbi.nlm.nih.gov/pubmed/17050834
my koi hear me coming and are at the surface and sucking for food before I even get
to the pond. Ingrid
I do not think fish hear on the sense that humans hear., but they feel.
what is making the noise or speech by way of vibrations in their
laterial line and sensory glands. To you and me soundwaves in water
are next to impossible to hear or distinguish, but just a slight
movement inthe water or the sound a single pellet of food makes when
it hits the water produces a loud enough sound to attract the
attention of the fish. I feed floating pellets to some of my saltwater
fish. One fish in particular you never ever see, as he is always deep
iside his rock cave or sand cave. I can toss justy 2 or 3 micro Hikari
pellets onthe water and that fast that fish is out of his cave and
pursuing the pellets. No way did the smell of those tiny pellets
permeate the water that quickly, which was virtuallay
imediately........so it had to be the sound and the vibration the
pellets made as they were dropped inthe tank. Your voice is nothing
more thana vibration or sound wave in another format to a fish and
yues they do tend to associate that sound pattern or form with food or
at least with the person or a person which usuallay does result ina
treat or in a feeding. Its a learn by association trait and most
critters can learn this in short order.
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