Who is The Human Piranha from Liar's Poker: Rising Through the Wreckage on Wall Street and what is their importance?

The Human Piranha is a nickname that refers to one of the specialist bond traders. He is identified as The Human Piranha because he speaks about government bonds in raw speech including copulating objects and ripping faces off. The Human Piranha is one of the author's favorite traders because of his brutally honest speech.