Chemicals used for animals/fish farming seems to be an underestimated issue, for example see the recent HN post about the vulture populations dwindling in India

Chemicals used for animals/fish farming seems to be an underestimated issue, for example see the recent HN post about the vulture populations dwindling in India due to anti-inflammatory medicine given to cows. In the above article, the pesticide use is to prevent lice from killing the salmons.