Is aquarium salt for fresh water fish?

No, aquarium salt is not for freshwater fish.

Here's why:

* Freshwater fish are adapted to low salt levels: They live in environments with very little salt. Adding salt to their tank can disrupt their natural balance and cause health problems.

* Salt can dehydrate fish: Freshwater fish absorb water through their skin and gills. Too much salt can draw water out of their bodies, leading to dehydration and death.

* Salt can irritate gills: High salt levels can irritate the delicate gills of freshwater fish, making it difficult for them to breathe.

Aquarium salt is specifically designed for saltwater fish. It helps to maintain the proper salinity levels in their tanks.

If you are keeping freshwater fish, you should only use dechlorinated tap water or bottled water that is specifically designed for aquarium use.