Concern is growing in Europe and the United States over the threat posed by snakefish that are able to live outside the water

The silent invasion of the northern snakefish (Channa argues)) is of increasing concern to researchers and environmental authorities in Europe and the USA. Able to survive outside the water and reproduce rapidly, this species native to Asia poses a serious threat to the local aquatic fauna. Its appearance in new habitats raises crucial questions about ecosystem conservation and species management exoticexotic invasive.

A super predator with amazing abilities

The northern snakefish is characterized by its unusual physiological characteristics. Unlike most fish, it has the ability to breathe outside of water thanks to specialized respiratory organs. This customization makes it possible to:

• survive in poorly oxygenated water;
• move on dry land for several days;
• colonize new habitats on land.

Its morphologymorphology impressive makes it a formidable predator. Able to reach almost a meter in length and weigh up to five kilos Channa argues has a wide mouth filled with sharp teeth, corresponding to them pikepike. These teeth enable it to attack a wide variety of prey and thus threaten the balance of local ecosystems.

Intensive reproduction and worrying spread

One of the most concerning aspects of the snakefish is its exceptional reproductive capacity. Females can lay eggs up to five times a year, releasing around 50,000 eggs each time. This fertilityfertility unusual partially explains speedspeed with which the species can colonize new territories.

The spread of Channa argues is primarily due to human intervention. The International Union for Conservation of Nature (IUCNIUCN) confirms that the species has been widely introduced outside its range distribution areadistribution area original. The main reasons for this spread are:

1. the aquarium trade;
2. intentional or unintentional releases;
3. used as a food source in some cultures.

Faced with this threat, the EU has included the northern snakefish on its list of invasive alien species of concern, underscoring the urgency of action to prevent its spread.

Impact on local ecosystems and control measures

The introduction of snake fish into new habitats can have devastating consequences for biodiversitybiodiversity local. In the absence of natural predators, this invasive speciesinvasive species can quickly dominate its environment, leading to:

In the United States, the Missouri Department of Conservation recently confirmed the presence of a fourth specimen in the state, illustrating the evolution of the species. Environmental authorities are implementing monitoring and control strategies to limit the spread of snakefish, including:

• public and fisher awareness;
• the prohibition of transport and possession of the species;
• targeted eradication campaigns.

The fight against northern snakefish represents a major challenge for the conservation of aquatic ecosystems in Europe and the United States. International cooperation and citizen vigilance will be essential to contain this invasive threat and protect local biodiversity.