Holy feral goldfish Batman. Just when you thought Australia’s wildlife couldn’t get more freakier, lets introduce the feral goldfish. Estuaries in Western Australia are being invades by goldfish the size of footballs. Evidently the problem is due to people flushing unwanted pets down the loo. Seems the usually freshwater fish have morphed to adapt to the saltier water (and are loving it). As a result they are chewing up vegetation and feeding on the native fish’ eggs. See ya eco system. Who knew goldfish out of their bowls could be such pests.