腔棘鱼

例句：

1. 1. The scientist observed the fish in the river and noted its unique shape.
   科学家在河流中观察了这条鱼，并注意到它独特的形状。
2. 2. The snakehead is a predator that can reach lengths of over 3 meters.
   蛇头是一种捕食者，可以长到超过3米。
3. 3. The eel was caught by the fisherman with a net.
   渔夫用网捕获了这条鳗鱼。