Fishermen use contentious ways to snare catch

Abbas Khan feeds a hot wire from a rickety generator into a river, a fishing technique he argues is more environmentally friendly than others used in northwest Pakistan - though he also admits it has killed several of his friends.

Hundreds of fishermen risk their lives daily to hunt the rare fish known as "sher mahi", found in the Kabul River which flows from the Hindu Kush in Afghanistan into neighboring Pakistan, before merging with the Indus.

Some swim for hours on inner tubes, dragging nets behind them. Others use more brutal - and illegal - techniques: spraying pesticides directly into the river or, like Khan, using the electric current from generators to stun the river's inhabitants into submission.