The Taiwan Rumble Fish, whose body is so colorful that it is often mistakenly assumed to be a tropical fish from abroad (also known as the "Three Spotted" fish), was originally widespread in ditches and drains throughout Taiwan.
最明顯的例子是，當許多台灣本土動物在人類的開發腳步下節節敗退時，有些外來動物，像吳郭魚、福壽螺，在引進者無心插柳的情況下，自行覓食存活，反而子孫綿延。