Question

Which of the following is not a reason that nonnative species are reared outside their native ecosystems?
a.
They are commercially important.
b.
They are used to replace native species.
c.
They are used for restocking programs.
d.
None of the above

Answer 1

d. None of the above

All three listed are legitimate reasons nonnative species are reared outside their native ecosystems: they are raised for commercial production (e.g., tilapia, shrimp), for restocking programs (e.g., hatchery trout released for fisheries), and sometimes used to replace failing or depleted native species.