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What do fish drink

derek kelly

The Deli lama
Club Sponsor
We all know that fish live in water, and we all know how fish feed, and we all know that fish take oxygen from the water but what do they actually drink, cos if they drank the water they live in there would be no water left, also going on the alchohol theory for every pint of water they drank they would piss three pints, so this can't be the answer as the world would be flooded with fish piss by now, plus they would have to drink their own piss which wouldn't be good for them.
I know that if fish drink pernod it kills them,
 

Cyclops

Registered User
Here you go young sir

:beer: I was bored


The answer to this question differs, depending on whether you're talking about saltwater fish or freshwater fish.

Freshwater fish do not actively drink water, but absorb the water through their skin and gills. On the other hand, saltwater fish do actively drink sea water. Their gills process the water and take out the salt.

The salmon is an interesting example of a fish that lives in both fresh and salt water, and consequently, they have the characteristics of both types of fish. Salmon are born in fresh water, and migrate to the ocean. While living in the ocean, they drink saltwater by opening their mouth; their gills then rid their bodies of the salt and minerals. When the salmon enters freshwater streams to spawn, they stop drinking the water and instead absorb it through osmosis (osmosis means that the water passes through the cells of the fish's skin into its body).
 

Speedy

Registered User
Saw your answer, Cyclops, and a memory flooded back. Haven't thought about this for about 30 years.

"Osmosis is the passage of a solvent across a semi-permeable membrane from a dilute solution to a more concentrated one".

Cant remember the teachers name though.
 

derek kelly

The Deli lama
Club Sponsor
So if the fish absorb the water, and get rid of the salt, how come we don't have fifty stone fish with a severe water retention problem ploughing their way through vast quantities of salt :dunno:
 

Fat Bert

Registered User
CycleClipz

Cyclops said:
:beer: I was boring............


The answer to this question differs, depending on whether you're talking about saltwater fish or freshwater fish.

Freshwater fish do not actively drink water, but absorb the water through their skin and gills. On the other hand, saltwater fish do actively drink sea water. Their gills process the water and take out the salt.

The salmon is an interesting example of a fish that lives in both fresh and salt water, and consequently, they have the characteristics of both types of fish. Salmon are born in fresh water, and migrate to the ocean. While living in the ocean, they drink saltwater by opening their mouth; their gills then rid their bodies of the salt and minerals. When the salmon enters freshwater streams to spawn, they stop drinking the water and instead absorb it through osmosis (osmosis means that the water passes through the cells of the fish's skin into its body).


Nothing "fresh" there then

:f :f :f
 

Codbasher

Registered User
I really do think you guys need to get out in the fresh air a wee bit more!! :bang: :bang:
 

Centaur

Site Pedant
Club Sponsor
P*ss

Nowt wrong with drinking your own p*ss. Do a desert survival course and you even get to look forward to it......nearly. c7u8 Had a mate in Singapore who was a medic and every time we were on the coach back from a tour of the Tiger brewery he would urinate into the glass he had brought to keep him going on the trip home. (having emptied it first) When we called him a dirty b*gger he would protest it was perfectly healthy and drink it to prove the point. It takes all sorts.LOL In extremis yes but otherwise....definitely NO!
 

Artemis

Sweetie Goddess
Club Sponsor
Speedy said:
Saw your answer, Cyclops, and a memory flooded back. Haven't thought about this for about 30 years.

"Osmosis is the passage of a solvent across a semi-permeable membrane from a dilute solution to a more concentrated one".
So, what the fish are actually doing is reverse osmosis, not so easy, ask any submariner
 

mal 97

Registered User
does that mean whenever i buy a haddock i dont need to add salt :dunno:
 

Cyclops

Registered User
Fat Bert said:
Nothing "fresh" there then

:f :f :f





Oy twat head


got any staplers for sale :f :f


want to buy any cos a bloke in Manchester has just got a load in from the ?1 shop, he says you can have them for the same as last time ?2 each + PnP :lol:

And you have plenty of scrap old Derby Evening Telegraphs to wrap them in :rolleyes:
 
G

Gerrard

Guest
Fishy Story.

Hi DK.
Might be they drink Evian... and you can't see the bottles as they hid them behind the big stone or castle in the bottom of the tank.
Zippo.
 

derek kelly

The Deli lama
Club Sponsor
Graphite.ES said:
Hi DK.
Might be they drink Evian... and you can't see the bottles as they hid them behind the big stone or castle in the bottom of the tank.
Zippo.





Talking of Evian, here's a little thought for those of you who buy it, read Evian backwards.
 
G

Gerrard

Guest
Fishy Story.

Derek.
I can't read forwards let alone backwards.
Zippo
 
G

Gerrard

Guest
Fishy Story

and al flem smellin mis trakes.
Zippo
 
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