A fishy situation in Cambodia’s biggest lake

The sky was moonless, and it was pitch-black at 3:30am on Cambodia's Tonle Sap Lake.

"We are in the conservation zone. If they catch us, we will be in trouble," explained the fisherman.

To protect his identity, as fishing in restricted areas is punishable by a two-year jail sentence, he asked that Al Jazeera not reveal his name.

The Tonle Sap is one of the world's most productive freshwater fisheries and the main source of protein and fatty acids for Cambodia's roughly 15 million inhabitants.

The fact that fishermen are resorting to sneaking into the lake's protected areas speaks of an alarming truth: the Tonle Sap, Cambodia's "beating heart", is struggling to meet the demands of the country's growing population.