Easter Islanders killed virtually every fish

Geologically one of the youngest inhabited territories on Earth, Easter
Island was, for most of its history, the most isolated. Its inhabitants,
the Rapanui, have endured famines, epidemics of disease and cannibalism,
civil war, slave raids, various colonial contacts, and have seen their
population crash on more than one occasion. The ensuing cultural legacy
has brought the island notoriety out of proportion to the number of its
inhabitants.