Fish have joined chimps and birds as users of tools. Giacomo Bernardi, an evolutionary biologist at UC Santa Cruz, discovered and recorded a video of a fish using a tool. The wrasse, called an orange dotted tusk fish, uses a rock to smash a clam’s shell and eat the flesh inside. See the video of a wrasse using tools at: links.sfgate.com/ZLDF (when I tried to watch the video it wasn’t streaming very well).
Bernardi described wrasses as ” very keen on finding prey, very curious and highly competitive,” . “Their brains show that they have a very advanced sense of smell and advanced vision.” “They also have a fairly advanced ability to put their reasoning to good use.”
Read more at SF Gate: Fish known as wrasses are found to use tools.
Natural History Wanderings 
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