Could have some piranha in a tank of 16 gallons?

In particular, this tank http://www.thewallaquarium.com/aquariumstore/index.php/biorb-biube/biorb-aquariums/biorb-life-16-gallon-portrait-aquarium.html I know the tank is adapted to different climates, cold water, salt, etc. .. I would like at least 2-3 is possible and if so what species and how care for them.

Piranha are out. Complete. I agree with who said 75gallon minimum for a bank of adults, but more is needed, as more 200 gallons, assuming you mean piranhas red purse, of course. These Biorb tanks, including life style are more usability. Not really There is much I can take that and because of the way and access can be a pain to clean too. The fact that longer is high also means that only half of the average over a long rectangular tank, the fish are swimming side and has much less area for oxygen too. You could perhaps be a small group of micro-Rasboras, but I've never really seen any of these tanks Biorb look decently equipped for any period of time. There are over priced and some garbage.

Betta Max in BiOrb Aquarium