+1...I started with 2 pairs in my 450g... the biggest female would not leave the other female alone, so I finally removed the smaller...the "menage a trois" has remained together for almost 2 years, without problems, and eggs have been produced.Dont feel lost man. Why take the chance? It's very likely not going to work. Best to buy one of each or pick a pair and call it a day. There are tons of nice fish out there.