According to the text, what effect do cormorants have on fish populations in a natural setting?

Answer

They function as a check on overpopulation and remove the weak or slow-moving fish

In a natural setting, cormorants function as a check on overpopulation and remove the weak or slow-moving fish, which can potentially strengthen the overall gene pool of the prey species over time.

According to the text, what effect do cormorants have on fish populations in a natural setting?
dietbirdfishcormorant