why would anyone do this??

It is beyond disturbing. If you look closely when they're taking the
last bit of Mt. Dew out, it appears darker than I would expect it to
be. I wonder if it was the fish's gills hemorrhaging. If it wasn't
cruel enough to that point, then they stick in a 9V battery to zap the
poor thing?

Their main office is in NYC. Maybe a call to "The Animal Cops" aka the
ASPCA is in order? I know I'm sending the info along to them.

I sent those spawns of Satan an email condemming that movie.