An unusual catch has been recorded in the state of São Paulo in Brazil, raising alarm among conservation specialists. In the Marineiro River, a local 53-year-old fisherman pulled a huge freshwater fish — an arapaima measuring about 2.5 meters in length and weighing approximately 160 kilograms — from the water. As noted by the Diário do Litoral, this species is not typical for this river.
Experts are concerned about the mere fact of the arapaima's appearance outside its usual habitat. These fish are considered among the largest freshwater species in the world: they can reach lengths of up to three meters and weigh around 200 kilograms. Additionally, they are known for their very rapid growth rates.
A unique feature of the arapaima is its breathing method. They are capable of gulping atmospheric air, which allows them to survive and thrive in water bodies with low oxygen content. This enables the fish to easily adapt to a wide range of conditions.
When introduced to new ecosystems, such predators actively consume local fish and rapidly increase in numbers. Moreover, they have virtually no natural enemies, so population growth is only limited by the availability of resources. This is why arapaima are considered an extremely dangerous invasive species that can disrupt established ecological balances.
The authorities in São Paulo are already monitoring the situation. The spread of these giant fish is being tracked by units of the environmental military police. Experts emphasize that it is permissible and even necessary to catch arapaima to prevent potential harm to the local fauna.
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