512px-Common_lionfish_at_Shaab_El_Erg_reef_(landscape_crop)

By Alexander Vasenin (Own work) [CC BY-SA 3.0], via Wikimedia Commons
Common lionfish (Pterois miles) at Shaab El Erg reef in the Egyptian Red Sea

The Lion Fish, a very aggressive invasive fish in the Caribean Sea, is an example of having impact over native species, ecosystems and local economies.