[gundog]

Not true. By the time the big fish has been removed, it has reproduced.

[Does so]

“When there are not as many large fish to be caught, smaller ones are harvested which does not allow enough time for them to reach sexual maturity. Not only does this action affect the population’s life history traits, but it is also an unsustainable process.”

https://sevenseasmedia.org/where-are-the-fish-going-unsustainable-fishing-practices-leading-to-fishery-induced-evolution/