An Invasive Pufferfish Species is Threatening Croatia's Ocean Life
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Published: 16.10.2025.
The Adriatic is now facing a new threat, in the form of an invasive pufferfish.
Researchers first documented the fish in May 2024, but as time has passed, it seems that the species is becoming more invasive and is now presenting ecological and safety concerns. The pufferfish has spread to the Mediterranean through the Suez Canal.

Source: Pexels
Croatia’s Thriving Fishing Scene
Croatia’s freshwater angling scene has always been popular. Lake Zajarki, near Zagreb, has been put in the spotlight as of late and is quickly becoming a fishing hotspot. In the television show, Monster Carp, Neil Spooner and Tom Dove visit the lake to catch the biggest carp specimen yet.
In Fishing Allstars, Dean Macey and Adam Rooney also fly to Croatia, which is helping to present Croatia’s fishing waters to whole new audiences. Shows like this do more than entertain, too, as they raise important awareness about angling and help the sport to maintain its relevance in the modern age. Fishing games support this as well, with titles like Real Fishing Simulator giving you the chance to catch fish like the Dnieper in exotic reservoirs across the world.
Even in iGaming, fishing is a prominent theme, with slots online showcasing the allure of the sport in a whole new format. Titles like Big Bass Splash and Big Bass Amazon XTreme are just a few examples, but have graphics that range from buckets of chum to fishing rods and sailboats. As fishing in Croatia and fishing in general gain more awareness, with the help of modern media, it becomes easier to preserve the ecological state of our waters.
Scientists are also recommending public education campaigns to raise awareness of the dangers of fish like this. The media as a whole has been instrumental in keeping the sport of fishing in the spotlight, which has helped to provide the foundation needed to make this happen.

Source: Pexels
Safety Concerns of the Silver-Cheeked Toadfish
The silver-cheeked toadfish is incredibly toxic, as it contains tetrodotoxin, which is a neurotoxin that can cause severe effects if consumed. The fish also has a powerful bite and poses a threat to local marine ecosystems. It not only preys on marine life, but it can also cause damage to fishing nets, something that Croatian fishermen are currently battling against. Public awareness is the first step towards dealing with invasive species like this, but at the same time, scientists are also trying to remove fish during their spawning period to try and limit the spread.
As more anglers visit Croatia for fishing, the risk of encountering invasive species grows, but tourist zones, in combination with awareness campaigns for sea anglers and harbours, can help to reduce this risk, while stopping people from handling potentially dangerous species.
Even though it is possible to get this species under control, with special efforts currently being made by scientific organisations, it does raise an interesting point. As time goes on, more fish are finding their way into different waters, showing how much resilience plays a role in survival and how aquatic life is adapting to new and changing environmental conditions.