Final answer:
Freshwater fish excrete a lot of very dilute urine to regulate their water balance in their hypotonic environment.
Explanation:
Freshwater fish are ammonotelic, which means they excrete ammonia as a waste product. To remove urine, they need to pass a lot of very dilute urine to balance their electrolytes and get rid of excess water. This process helps them maintain homeostasis in their hypotonic environment.
Learn more about Ammonotelism in freshwater fish here:
https://brainly.com/question/39220152
