Can freshwater be obtained from fish in a survival situation?

In a survival situation, the body of a fish is largely made up of saltwater, as most fish live in saline environments. When considering options for obtaining freshwater, it's essential to understand that the water contained within fish is not suitable or sufficient for hydration, particularly when balancing out the body's needs after significant dehydration or in desperate situations.

While boiling fish can render them safe to eat and could potentially release some moisture, this process does not yield enough pure freshwater to significantly impact hydration. Extracting blood or moisture from their gills similarly falls short, as any fluids obtained would also contain salt and other constituents that could lead to further dehydration rather than alleviating it.

Thus, the idea that freshwater can be reliably obtained from fish in a survival situation is misleading, and therefore the response indicating that freshwater cannot be obtained from fish accurately reflects the reality of the situation.