2000g piranha pond sounds nice. any pictures please? And I also agree with others 2 years and a few more their size added to the shoal would be better in getting a breeding shoal.
Ok I only heard it from jp or commando can't remember which, and how is that so far fetched? A known breeding pair put into a 40 will def breed lol.......20 gallons a piece. I've heard them breeding in little rubbermaid tubs as well. Once they become a pair its pretty hard to stop them....