If certain species of shellfish (like sea urchins) or fish (like lion fish) are invasive, why are there daily limits on them? Why can’t we just harvest them to extinction?

Question

If certain species of shellfish (like sea urchins) or fish (like lion fish) are invasive, why are there daily limits on them? Why can’t we just harvest them to extinction?

In: Other

Answer 1

Generally, there aren’t limits in areas where they’re “invading.” (IME, at least)

There are areas where they *do* belong, and complete extinction would upset that ecosystem (besides which, they’re usually invasive because they’re hard to get rid of)