I have had this group of 6 orange firefish in my 75 gallon reef tank for several months, and "so far so good". PLEASE NOTE: I absolutely do NOT recommend that inexperienced hobbyists try keeping more than a single bonded pair of firefish in a tank. These fish generally are highly aggressive within their own species, except in the case of a bonded or mating pair, or in a large group in a large tank which has other factors set up to accommodate the special population of firefish. I did a lot of research and had previous experience with firefish before deciding to try keeping a full group. I had to make changes to my tank and my daily procedures for them, to give the best chance for them to remain cohesive (or at least not aggressive with each other) for the long term.
![](https://i.ytimg.com/vi/k4GHtX5_ODw/maxresdefault.jpg)