Their presence in the Han River was first reported in 2013. The worms' arrival overlaps with the glass eel fishing season. The worms prey on the eels — a valuable economic and livelihood source ...

Changes in ocean currents stemming from global warming have led to a sharp increase in endangered Japanese eel larvae reaching rivers in Hokkaido in recent years, a scientific team found.

Current research has focused on the critically endangered Anguilla anguilla, commonly known as the European eel.While its export outside the European Union is tightly regulated, large quantities ...