Shred Stixx Piranha, how many fin slots?

I ordered a Shred Stixx Piranha from a dealer based on videos, descriptions, and recommendations from others. I get the board in and it only has 3 fin slots. Everywhere online the board is discussed as having 5 fin slots.

I call the dealer and they tell me that the 5 fin was just a prototype and that the produced model only has 3 fin slots. I put some calls in to Shred Stixx but have been unable to get through.

Can anyone shed some light on this and how many fin slots this board is supposed to have or is the company I bought from trying to pass of an old model to me?

All production Piranhas (made in china/ $599) are 3 fin. All Custom Piranhas (made in USA/ $799) are 5 fin.

They made that very unclear for 2012.
But anyways, most people prefer the board set up as a thruster, and some as a twin.

Finally got through to Shred Stixx, definitely seems they confused a lot of people. All in all, they were great about answering questions concerning what type of board I was looking for based on my wave and riding style. Always good to chat with an actual company than a dealer. I think I am going to keep the 3fin piranha.

I own a 2012 Shred Stixx Piranha and it has 3 slots.