http://www.huffingtonpost.com/2011/07/12/tusk-fish-using-tools-eat_n_895563.html A professional diver has captured what are believed to be the first pictures of a wild fish using a tool. The picture shows a foot-long blackspot tuskfish smashing a clam on a rock until it cracks open, so it can eat the bivalve inside. The authors of a scientific paper on the matter claim that this meets the definition of tool use first laid out by Jane Goodall in her work with chimps.
The video makes some good points, and raises several important questions about this, the most important of which is: "If you define 'intelligence' so that only the behavior of primates can match it, then only primates will be seen as intelligent." In other words, is all this quibbling by way of a rigged game? Of course it is. God forbid we should share our big crappy pedestal with mere fish!