Hi Vourn,
The six types of quarks, ie Up, Down, Strange, Charmed, Top and Bottom
are the six "flavours" and are defined in what is known in The Standard Model.
http://particleadventure.org/particleadventure/
http://www.hep.man.ac.uk/babarph/bab...cs/page03.html
Cheers,
Andy.