https://www.youtube.com/watch?v=GibiNy4d4gc .

Interesting, but one thing to think about is swarm animals, like insects or mice and rats. They survive being eaten by the truck load by having as many children as possible, so would devour everything pretty quickly. The opposite is also true for a lot of predators, bears usually only have a maximum of 5 cubs per year, on average closer to 2 or 3. would need to shoot those numbers way up, and prey numbers way down. But basically nothing would survive flys, they'd basically become piranhas.