It's easy to miss: a plastic fish barely larger than a thumb, filled with soy sauce, tucked into the corner of a sushi tray or bento box. In September 2025, South Australia became the first jurisdiction anywhere in the world to specifically ban this object - the miniature 'soy sauce fish' bottle under 30ml - as part of its ongoing single-use plastics reforms.

Why such a small target matters

The soy sauce fish isn't banned because of its size in landfill terms - it's banned because of what that size does to the recycling system. These bottles are too small for most sorting machinery to detect and separate reliably, they're rarely rinsed or cleaned, and because they're often free giveaways rather than purchased items, almost nobody thinks to recycle them deliberately. They end up as litter far more often than almost any other plastic packaging item, disproportionate to how little material they actually contain.

Part of a much bigger phase-out

South Australia's ban doesn't stand alone. Every Australian state and territory has been progressively restricting different single-use plastic items - lightweight bags, cutlery, plates, stirrers, straws, and cosmetic microbeads - under Australia's National Packaging Targets, coordinated by the Australian Packaging Covenant Organisation, which aims to eliminate problematic and unnecessary single-use plastics nationwide. New South Wales has confirmed it will follow SA's lead, banning plastic bread tags and soy sauce fish bottles from 2026 as part of a broader 'plastic detox' running from 2026 to 2030. The pattern across these bans is consistent: legislators are increasingly targeting the smallest, most overlooked plastic objects in daily life, precisely because they're the ones existing recycling infrastructure was never built to handle.

Sources

Plastic bread tags and soy sauce fish to be banned in NSW from 2026 - Time Out Sydney
Australian Single-Use Plastic Bans 2026 Guide - Smartbag