(Glossogobius giuris) is a freshwater fish native to Mainit Lake. It is called “biya” in Tagalog and “white goby or tank goby” in English. The term “pidjanga” is also sometimes fondly used to refer to the Mainitnons, the people of the Municipality of Mainit, a town in Southern Philippines. This blog hopes to capture potentials of Migrants Pidjangas for the Development of our Town by attempting to document development issues, folk stories, and current concerns, about the Pidjanga — both the fish and the people.

Lake Mainit... Philippines' MOST TRANSPARENT Lake

(Click image to enlarge)

Lake Mainit Secchi depth measurements ranged between 3.20 - 6.65 meters. Secchi disk visibility is a measure of the water clarity and it is related to the photic depth. A new Philippine record of 6.65 m Secchi depth for the most transparent lake was observed at the vicinity of Jabonga. Lake Lanao had a maximum Secchi depth reading of 6.0 m in 1932 (Frey, 1974) which made it the most transparent lake in the Philippines until January 2004.

It is prominent that Mainit municipality area close to rice fields has very low visibility including municipalities of Kitcharao and Alegria. Areas away from tributaries have higher visibility including Jabonga and areas close to Malimono range.

Source: Tumanda, MI Jr., EC Roa,JG Gorospe, MT Daitia,SM Dejarme, RD Gaid (2005). Limnological and Water Quality Assessment of Lake Mainit. Mindanao State University at Naawan. (Thanks to LMDA for sharing the report)

By: Zimmbodilion Mosende.
Aug 8, 2006

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Maradjao karadjao, Pilipinas!

Welcome to the online home of the Pidjangas from the Municipality of Mainit, Surigao del Norte, PHILIPPINES . Pidjanga, Pedianga, Pijanga, Pedjanga... amo ra ton... gikan sa ato danao! For comments and suggestion contact me at

CBCP News: Mining threatens 4th largest freshwater lake in PH

SEVEN are in the town of Mainit, Surigao del Norte... of the 15 exploration permits (EP) that the Regional Office 13 (CARAGA) of the Mines and Geosciences Bureau (MGB) of the Environment department approved as of June 30, 2010.

Read more at and Surigao Today.

If you want to support the protection of Lake Mainit, contact me at pidjangaATgmailDOTcom or 0917-800-4557. Zimm/Peter/Pidjanga

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