Post by carlrs on Jan 3, 2007 20:15:32 GMT -5
Here is an interesting cross post:
QUESTION: How do fish drink water?
ANSWER: Freshwater fish absorb most of the water they need through
their skin via osmosis (is the net movement of water through a
selective permeable membrane from a region of low solute potential to
a region of high solute potential), not through their gills. The
gills are for respiration.
Saltwater fish actually drink the water the live in, as the salt in
the water is constantly pulling H2O from their bodies in a reverse
respiration, this is why some fish such as catfish are sensitive to
salt in the water, but this is also why some fresh water fish are
helped by salt to generate a mucous slime coat on their skin which is
necessary for disease prevention. Proper electrolytes, magnesium and
other elements are important for slime coat generation.
Another note, because most freshwater fish cannot drink their
surrounding water (Salmon and others are exceptions), when you place
these freshwater fish in saltwater, they actually dehydrate.
Osmosis in fish;
Their cells must always be bathed in a solution having the same
osmotic strength as their cytoplasm. This is one of the reasons why
fish and other animals have kidneys. The exact amount of water and
salt removed from their blood by the fish kidneys. The process of
regulating the amounts of water and mineral salts in the blood is
called osmoregulation. Fish which live in the sea (remember the sea
is full of salt and other elements), but fish which live in
freshwater have the opposite problem; they must get rid of excess
water as fast as it gets into their bodies by osmosis. Osmosis is an
important topic in biology because it provides the primary means by
which water is transported into and out of cells.
aquarium-answers.blogspot.com/
americanaquariumproducts.com/MedicatedWonderShell.html
Carl
Aquarium Maintenance since 1978, now on the web.
www.americanaquariumproducts.com/Aquarium_Information.html
Betta_Blossoms:
ah, a refreshing topic for me, I did a little reasearch on this a while ago, found some fasinating things
betta mom:
Hey that was very neat . Good read . Thanks .
_________________
BETTAS ARE BEST.....
QUESTION: How do fish drink water?
ANSWER: Freshwater fish absorb most of the water they need through
their skin via osmosis (is the net movement of water through a
selective permeable membrane from a region of low solute potential to
a region of high solute potential), not through their gills. The
gills are for respiration.
Saltwater fish actually drink the water the live in, as the salt in
the water is constantly pulling H2O from their bodies in a reverse
respiration, this is why some fish such as catfish are sensitive to
salt in the water, but this is also why some fresh water fish are
helped by salt to generate a mucous slime coat on their skin which is
necessary for disease prevention. Proper electrolytes, magnesium and
other elements are important for slime coat generation.
Another note, because most freshwater fish cannot drink their
surrounding water (Salmon and others are exceptions), when you place
these freshwater fish in saltwater, they actually dehydrate.
Osmosis in fish;
Their cells must always be bathed in a solution having the same
osmotic strength as their cytoplasm. This is one of the reasons why
fish and other animals have kidneys. The exact amount of water and
salt removed from their blood by the fish kidneys. The process of
regulating the amounts of water and mineral salts in the blood is
called osmoregulation. Fish which live in the sea (remember the sea
is full of salt and other elements), but fish which live in
freshwater have the opposite problem; they must get rid of excess
water as fast as it gets into their bodies by osmosis. Osmosis is an
important topic in biology because it provides the primary means by
which water is transported into and out of cells.
aquarium-answers.blogspot.com/
americanaquariumproducts.com/MedicatedWonderShell.html
Carl
Aquarium Maintenance since 1978, now on the web.
www.americanaquariumproducts.com/Aquarium_Information.html
Betta_Blossoms:
ah, a refreshing topic for me, I did a little reasearch on this a while ago, found some fasinating things
betta mom:
Hey that was very neat . Good read . Thanks .
_________________
BETTAS ARE BEST.....
