Apparently the world's supplies of fish are threatened by
cats eating them all. Not predatory feral cats, but the pampered domestic variety, who consume increasingly large quantities of tinned fish.
"What is also interesting is that, in Australia, pet cats are eating an estimated 13.7 kilograms of fish a year which far exceeds the Australian average (human) per capita fish and seafood consumption of around 11 kilograms.
Wild forage fish, which includes sardines, herrings and anchovies, are an important link in the marine food chain, as part of the diet of larger fish like tuna and swordfish.