I have 6 huge Buenos Aires Tetras that have grown bigger than expected. I keep them in a 20 gallon high and they don't have much swimming room. They are around 3-4 inches and are really fat. I rather them go to someone with a tank bigger than a 20 gallon. They are peaceful, but get a little crazy during feeding. They used to be in my 75 gallon, but when I moved I had to downgrade. PU is free, but if I have to ship I am asking 15 dollars to cover the cost of shipping. The pics aren't that great because they are really active. PM me if interested.