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English
Etymology
From janitor + fish, coined by the Filipino locals and as well as the aquarium fish enthusiasts for its ability to clean aquaria by eating algae & fish excrements.
2006 June 6, Mike Baños, “Janitor fish threatens Asia's largest marshland”, in Philstar.com:
The janitor fish infestation that has plagued Marikina River and Laguna de Bay has also spread to Mindanao, and is now threatening to run riot across the delicately balanced ecosystem of Asia’s largest marshland, the Agusan Marsh in Agusan del Sur.
