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Here's some silly Questions.


New_to_fish_world

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Shows how ignorant you are smidey as the females have a special adaptation that allows them to talk and fart at the same time! :wink: :lol:

:o my partner just said that special adaptation is the fact that we can consume extra air to allow us to talk and fart from the wind whistling through our ears :evil: ............he got a smack :evil:

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Lol, I don't know about the farting but marine fish do drink water!

Freshwater fish, as far as I'm aware, do not 'drink' water (or they drink very little) but absorb it passively across the gills/skin. Because water moves down the solute gradient through osmosis, it moves in through the gills (and potentially skin of smaller fish) passively (requiring no active mechanisms) to try and balance the concentration of solutes with the external environment. This causes a build-up of fluid inside fw fish which they need to deal with by constantly releasing a dilute urine. Any ions are actively pumped into the body across the gills as needed.

Marine fish, on the other hand, live in a hypertonic environment (more solutes dissolved in seawater then their own fluids) Their water is passively exiting the body and so the fish will actively drink water and then actively pump the ions out across its gills in order to compensate for the dehydration. Also marine fish pee very little and it is very concentrated.

There is a good pic to illustrate this here :)

http://media-2.web.britannica.com/eb-media/41/6541-004-A9497BC0.gif

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Technically the definition of drowning is asphyxiating by getting water in the lungs. Since fish don't have lungs (except lungfish), they cannot 'drown'. But they can definitely suffocate in water either by not being able to reach the surface or not having enough dissolved oxygen in the water. You can argue that Bettas and other 'air breathers' can drown...but they don't have true lungs, only highly vascularized gas bladders called labyrinths.

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Technically the definition of drowning is asphyxiating by getting water in the lungs. Since fish don't have lungs (except lungfish), they cannot 'drown'. But they can definitely suffocate in water either by not being able to reach the surface or not having enough dissolved oxygen in the water. You can argue that Bettas and other 'air breathers' can drown...but they don't have true lungs, only highly vascularized gas bladders called labyrinths.

:hail: im sensing a slight fish addiction there lol :lol:

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Hehe ;)

Or just 7 years of uni doing a freshwater and marine bio degree and masters...+ lots and lots of money later :(

Well said.

At this point I would hide in case Caryl sees this and requests an article for the AW mag... :wink:

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