Saltwater fish are adapted to a hypertonic environment. In a hypertonic environment, the concentration of solutes (salt) in the surrounding water is higher than in the fish's bodily fluids. As a result, saltwater fish need to regulate their internal salt and water balance to prevent dehydration, as water tends to move out of their bodies into the surrounding seawater through osmosis. They adapt by drinking seawater and excreting excess salt through specialized cells in their gills and urine.
For what kind of external environment is a saltwater fish adapted?
Isotonic Environment
Osmotonic environment
Hypotonic environment
Hypertonic environment
1 answer