Incidentally, is that an error in the documentary where it suggests that by eating the decaying vegetation the Apple snails supposedly save the waterways from low oxygenation? Wouldn't the snails use up just as much oxygen while reducing the decaying plant matter as bacteria itself would use up to accomplish the same thing?
Applesnails get a big part and some times almost all of their oxygen from the atmosphere.
They go up to the surface to breath and then down again to eat if there is to little oxygen in the water.
Please ignore any spelling/grammatical errors. I'm swedish and sometimes I'm also drunk.
Last edited by m8e; 07-20-2012 at 02:30 PM.