Credit: Hannibal M. Chavez (Philippines)
The proliferation of janitor fish is an alarming issue in Laguna de Bay. Two species of janitor fish (Pterygoplichthys pardalis and Pterygoplichthys disjuntivus ) which initially thrive in the lake due to escapement from ponds had an impact on the environment which favored their establishment. The high load of nutrients and expanded agricultural and livestock production had favored the growth and proliferation of this species.
