A mixture of fresh and salt water and is sometimes referred to as a nursery for young fish
An estuary is a lake or river with a mixture of fresh and salt water(mostly near the sea). You would find freshwater fish and some species of saltwater fish in an estuary. There are also some marine toads\frogs and a few water insects.
Brackish water
because saltwater fish must be live in saltwater
Damming a river will affect the estuary at the river's mouth by lowering the amount of water passing through the estuary. This can cause the loss of habitat and nursery areas for small fish, birds, and even sharks.
saltwater
They are Saltwater fish.
Saltwater fish are hypoosmotic.
Saltwater fish live in the saltwater seas and oceans around the world.
This depends on the type of fish New answer You could isolate the fish by placing it into a nursery tank so that the other fish do not eat her eggs or young fish as they hatch.
A saltwater fish tank can be half freshwater and all of the saltwater fish will live but not for very long.
Because saltwater fish can only breathe in saltwater (as in the ocean) and freshwater fish can only breathe in freshwater (as in tap water.)