Water Chemistry

I came across an interesting interview with Giacomo Bernardi, professor of ecology and evolutionary biology at the University of California, Santa Cruz, while listening to one of my favorite podcast, Science Sort Of..., and I wanted to share it with community at ReefAddicts. They talk about the unusual behavior of a particular wrasse that was observed in nature. It is the first fish ever reported to use tools!
Here is the link to the podcast episode which I strongly recommend everyone listen ...