I have a school of 7 of them in my 55. They were very nippy in the quarrantine tank, 4 of them, so I increased their number and that helped a great deal. They seem to keep their issues conspecific, and allow a lone black phantom tetra to school with them, and do not bother the white clouds, cardinals, angel or dwarf gourami. I find their colors beautiful and complement the green of a planted tank beautifully. My vote is Yea.