 The wild population of fish is increasingly threatened by overfishing and water pollution.A drop in the lake's water level represents another threat, and is believed to be driven by water extraction by the increasing human population, climate change and deforestation.The chambo and kampango have been particularly overfished (the kampango declined by about 90% from 2006 to 2016, "O. karongae" and "O. squamipinnis" by about 94%, and "O. lidole" might already be extinct) and they are now seriously threatened.