Imagine a staggering four million salmon, each a living creature, perishing prematurely in the waters of Tasmania’s fish farms in 2025. This isn’t just a statistic—it’s a stark reminder of the challenges our planet faces as climate change disrupts ecosystems. Government data reveals that at least 4 million salmon met an early end, with a particularly devastating 500,000 dying in November and December alone as ocean temperatures soared. But here’s where it gets even more alarming: this isn’t an isolated incident. It’s part of a larger pattern tied to rising ocean temperatures, which have reached levels that Atlantic salmon simply cannot tolerate.
Scientific research tells us that when ocean temperatures climb near 18°C, Atlantic salmon face a cascade of health issues. Warmer waters mean less oxygen, leading to liver and kidney damage, reduced appetite, and heightened vulnerability to diseases. These conditions aren’t just uncomfortable—they’re deadly. In the final three months of 2025, over 2,500 tonnes of salmon perished, bringing the year’s total loss to a staggering 20,133 tonnes. That’s 20,133 tonnes of fish that never made it to processing, let alone to our plates. And this is the part most people miss: in December alone, more than 40 tonnes of salmon died each day—nearly triple the daily average from the cooler months of July to October.
Stewart Frusher, a retired professor from the Institute for Marine and Antarctic Studies at the University of Tasmania, warns that this surge in December deaths is a dire omen for the future. “We’re at a point where the waters in south-eastern Tasmania are no longer suitable for salmon,” he explains. This isn’t just a problem for the fish—it’s a red flag for the entire aquaculture industry and the ecosystems it depends on.
But here’s where it gets controversial: While Tasmania’s Animal Welfare Act clearly states that animal owners must avoid causing unreasonable pain or suffering, there’s been no apparent regulatory action in response to these mass salmon deaths. The RSPCA has confirmed that salmon are capable of feeling pain, yet the silence from authorities is deafening. Compare this to Norway, where mass fish deaths at salmon farms result in significant fines. In November 2025, Norway’s Food Safety Authority fined two companies a combined total of over A$286,000 for breaches that led to the deaths of more than 238,000 salmon. So, why isn’t Tasmania following suit?
Jess Coughlan, a senior campaigner at Environment Tasmania, argues that the lack of penalties does little to motivate the salmon industry to improve. “Without fines, there’s no incentive to prevent these deaths from becoming the new normal,” she says. “Animal welfare must be brought back into focus for an industry that seems to be spiraling out of control.”
Tasmania’s salmon producers, represented by Salmon Tasmania, were asked for their response to calls for substantial fines. Their silence speaks volumes. But the question remains: Should companies be held accountable for mass fish deaths, just as they are in Norway? And if so, what does this mean for the future of aquaculture in Tasmania?
What do you think? Is it time for Tasmania to take a harder line on fish welfare, or is the industry already doing enough? Let us know in the comments—this is a conversation that needs your voice.
