If a healthy freshwater fish is placed in saltwater, the fish
[amp_mcq option1=”becomes dehydrated and dies” option2=”becomes bloated and dies” option3=”suffers from microbial infection and dies” option4=”experiences no problem” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2011
When a healthy freshwater fish is placed in saltwater, it moves into a hypertonic environment, where the solute concentration outside is much higher than inside its body. This causes water to move *out* of the fish’s body into the surrounding saltwater by osmosis. This leads to rapid dehydration of the fish’s tissues and organs. The fish cannot osmoregulate effectively in this environment and will become dehydrated and eventually die.