Dec 01 2025ENVIRONMENT
The European Catfish: A Silent Invader in Spain's Waters
The European catfish, a massive freshwater fish from Eurasia, has quietly taken over parts of Spain. It first arrived in the Ebro River in 1974. People brought it there for fun fishing. But now, it's in seven big river systems. It's a problem because it's not from here. It spreads fast and takes ove
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