1.   And acid rain is killing the fish in lakes across the rich world.

2.   Sea snakes inject a poison so strong that it kills a fish instantly.

3.   These depths should also prevent the pond from freezing solid in a cold winter, which would kill any fish.

4.   ...a dam system that kills the fish as they migrate from streams to the ocean.

5.   Illegal dumping of waste is poisoning the stream and killing fish.

6.   The move follows reports that a new mechanised suction dredge is breaking up river banks, blocking rivers and killing fish.

7.   A combination of oil being dumped in the lake and excessive algae killed the fish last year.

8.   While he is living there he is stopping glue sniffers and vandals killing the fish and ruining the countryside.