Why is sustainable cohabitation of large Nile perch and smaller tilapia generally unfeasible in a pond?

Answer

Due to the predatory nature of the Nile perch consuming the smaller fish

Because the Nile perch is predatory, it will eat smaller fish, making it incompatible for sustainable harvesting alongside smaller tilapia populations in the same environment.

Why is sustainable cohabitation of large Nile perch and smaller tilapia generally unfeasible in a pond?
speciesfishNile Perchtilapia