RELEASING FISH INTO RIVER

In the pictures above, a group of people are reciting Buddhist prayers during a ceremony to release fish into the river.  After that they will they haul one packet after the other to the river's edge and tip it over, releasing the fish into the water. "May good karma come back to us," they will chant at the end of the ceremony.
Freeing captive animals is an age-old religious tradition and is linked to Buddhism.  This ceremony is known as "mercy release".