Would a salt water marine fish survive in a freshwater environment?

Saltwater fish can’t survive in freshwater because their bodies are highly concentrated of salt solution (too much for freshwater). On the other hand, freshwater fish can’t survive in the ocean or saltwater because the seawater is too salty for them.

What do you think would happen if you put a fish adapted for saltwater in freshwater?

A fish that lives in salt water will have somewhat salty water inside itself. Put it in the freshwater, and the freshwater will, through osmosis, enter the fish, causing its cells to swell, and the fish will die.

Do fish that live in the sea need salt What do they do if they take in too much of it from seawater?

Starfish live in a state of isotonic stability with the surrounding salt water meaning that there is an equal amount of water moving between the body tissues and salt water. Putting too much salt in your saltwater aquarium will also dehydrate those fish.

What would happen if a saltwater fish did not actively maintain the balance of salts and water in its body?

Because the salt concentration inside their body is higher as in the surrounding water, water enters the body due to osmosis. Without any active regulation of this process, fishes would swell and get bigger and bigger. To replace the water loss, they continually need to drink seawater.

What fish can live in both salt and freshwater?

Euryhaline organisms are able to adapt to a wide range of salinities. An example of a euryhaline fish is the molly (Poecilia sphenops) which can live in fresh water, brackish water, or salt water.

How fish can survive in salt water?

Soaking in Salt So fish need to drink lots of seawater to stay hydrated. And because seawater is so salty, they also must pump out the excess salt, both through their kidneys and using specialized cells in their gills.

Do saltwater fish get thirsty?

They don’t ever get thirsty. Marine fish are what’s called hypertonic to the seawater. So essentially, they lose water through their gills to the seawater. in order to replenish that water, they have to drink seawater and process the salt out.