The fresh water fishes are ______?

تازہ پانی کی مچھلیاں ______ ہیں؟

Hyperosmotic

Hyposmotic

Hypotonic

None of these

Freshwater fishes are hyperosmotic.

It means their internal body fluids have a higher concentration of solutes compared to the surrounding water.

They actively absorb salts and excrete excess water to maintain osmotic balance.