Crabs, crazy ants, and Christmas Island
The red crab is critical to the forest ecology on Christmas Island. Its population is threatend by an invasive species, the yellow crazy ant, Anoplolepis gracilipes. Parks Australia has a plan, that sounds almost crazy, to fix that. They plan to introduce another species:
A wasp that kills the bug that feeds the ants that kill the crabs that keep the forests healthy on Christmas Island.
The yellow crazy ant is not even in the same genus as the Rasberry crazy ant, Nylanderia fulva, that has invaded Texas. Lots of ants. Lots of craziness.
Still no cure for the Burmese pythons in the Everglades.