Our Amazing Planet warns against flushing aquarium fish down the toilet:
But in real life, flushing Nemo wouldn’t end happily. Aquarium species are some of the hardiest fish and plants in the world, and tank owners and importers who dump unwanted marine life are introducing tough, non-native species to California waters, says a new report on the state’s aquarium trade.
Just think of the potential troubles at our sewage lagoons. Something might eat the carp we’re raising out there, our inland tuna.