Hogan and a wels catfish (Silurus glanis) take a swim in Spain's Ebro River, 2009.
2009年，国家地理研究员泽布·霍根和一位捕鱼向导在西班牙的埃布罗河托着一条135磅重、83英寸长的六须巨鲇（学名：Silurusglanis）。
The same phenomenon occurred when wels catfish was introduced into the Ebro River in Spain.
同样的现象在六须鲶鱼引入西班牙埃布罗河时也发生了。
The same phenomenon occurred when wels catfish was introduced into the Ebro River in Spain.
同样的现象在六须鲶鱼引入西班牙埃布罗河时也发生了。
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