Fresh water fishes produce ______ urine/body weight.

تازہ پانی کی مچھلیاں ______ پیشاب/جسم کا وزن پیدا کرتی ہیں۔

6-12%

5-12%

4-12%

None of these

Freshwater fishes produce urine that constitutes 5-12% of their body weight to eliminate excess water.

This helps maintain osmotic balance by excreting large volumes of dilute urine.