These two are the original two I got ages ago. I have tried adding more, but they kept dying, I have no idea why. I decided to give up getting more, and anyway, these two seem to be quite happy together. There are only 6 Penguin Tetra,s, 1 plattie, and 4 small Bristle noses atm. so they have a lot of swimming space. Its a planted tank, with most of the plants along the back and a couple of bunches in the middle. You can see a lot of gravel. I wish a could put a photo up, but I have no camera.