While the Coqui gently put us to sleep in Puerto Rico and is a simbol of PR, it seems that this little loud but harmless small tree frog is causing all sorts of issues in Hawaii. Not only that but it is being hunted down. Seems that the population per acre of land is much larger than the Coqui population per acre in PR. It is even affecting their property value.
Hard to believe that such a tiny frog that harms no one can cause such problems elsewhere.
You may want to look at this article. http://flip.it/HhRtJ