Troubled waters: Jakarta battles deadly, invasive suckerfish

The sapu-sapu, a sucking fish introduced from South America decades ago to keep Southeast Asian aquariums algae-free, has made a home in Javan rivers, many after being thrown out for outgrowing their tanks. Unlike in the Amazon River where it has natural predators, the sapu-sapu quickly took over in Java, outbreeding indigenous freshwater fish, eating their eggs and outcompeting them for food. Residents and campaigners have complained about the stinky, unsightly pileups of fishy remains, and the...