Freshwater fish are ________ with respect to osmoregulation.
A)hypotonic regulators
B)hypotonic conformers
C)hypertonic regulators
D)hypertonic conformers
E)isotonic conformers

Question

Quizplus · Accepted Answer

Freshwater fish are hypertonic regulators, which means they actively take in water through their gills and excrete dilute urine in order to maintain a higher salt concentration inside their bodies than the surrounding water. This is necessary because freshwater is hypotonic (has a lower salt concentration) compared to the fish's body fluids.

Freshwater Fish Are ________ with Respect to Osmoregulation