I am setting my 125 gallon fish tank. I want all community fish, that stay small. I love small fish. With this being said, what is 1 kind of fish that I can buy to be a center piece fish? Fish that I have right now are glass catfish, buenos aires tetras, zebra danios & harlequin rasboras. Their schools will all be up a few more numbers to reach 7 or 8 each. What fish could be a center piece that will get a long with all of these guys?