Dartfish compatibility question

[Brian J]

I have a purple firefish (Nemateleotris decora) and a scissortail dartfish in my QT, a few weeks away from going into my 90G display. They get along fine. I was considering getting a standard dartfish (Nemateleotris magnifica) as well. Does anyone have experience mixing these? I know the purple and the standard are from the same genus, so that is why I am concerned. I could add them all to the display tank at the same time if necessary.