Introduced or exotic fishes are those that have been imported from other countries for food, recreation and other purposes. Many introduced fishes have become invasive or harmful for causing ecological damage, economic loss and even human injury. Based on a study of existing records and observations, 59 freshwater fishes were found to have been introduced into the Philippines from various countries since 1905 for various reasons such as for aquaculture (44 percent of the fishes), ornamental purpose (42 percent), recreational fishing (seven percent) and mosquito control (seven percent).

Guerrero R. D. III. (2014, February 6). Introduced freshwater fishes in Phl: An assessment and recommendations. The Philippine Star, p. B-8.