Osmoregulation Fish :s (1 Viewer)

[captain awesome]

Marine fish (salt water) are hypotonic to their souroundings?
So they loose water and then drink water and produce small amounts of concentrated urine to minimise this..

Righttttt??

 

[SpreadTheWord]

Marine Fish (Salt Water) have lower concentrations of solutes in comparison to their surroundings, therefore to avoid water loss they will keep drinking the saltwater. With the intake of salt and water, they will keep the water, but excrete the salt, producing very little and concentrated urine.

Contrastingly Freshwater fish have higher concentrations of solutes in their body's in comparison to their surroundings. As water will access through diffusion, the fish will need to get rid of the excess water, thus causing it to produce very large amounts of dilute urine.

So yes, you are quite right.

Just a bit extra to clarify anything else.