Justify with the help of an example where a deliberate attempt by humans has led to the extinction of a particular species

The Nile perch introduced into Lake Victoria in East Africa, eventually led to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake// Abingdon tortoise in Galapagos islands became, extinct, after goats were introduced due to greater browsing efficiency of goats//Connell’s field experiment showed that the competitively superior barnacle Balanus, excludes smaller barnacle Chathamalus// Over exploitation by man, caused extinction to Stellar’s sea cow/Passenger pigeon.