What is the definition of spawing ground?

Answer 1

A body of water in which fish mate and lay their eggs.

Mating in fish is external: the male releases his sperm over the lain eggs.

Answer 2

A spawning ground is a location where fish, mollusks, crustaceans, or other aquatic organisms lay eggs or spawn. It provides suitable conditions for the eggs to develop and hatch, such as appropriate water temperature, oxygen levels, and substrate for attachment. Protecting spawning grounds is essential for maintaining healthy fish populations.