Phylum: Chordata Class: Actinopterygii Order: Perciforms Family: Ptereleotridae Genus: Nemateleotris Species: Nemateleotris Magnifica Common names: Firefish, dartfish, orange firefish, magnificent dartfish, Reef Safe: Absolutely. A great, peaceful, addition to the reef setting. Max. fish size: 3" Min tank size: 10 gallons Attitude: This is a peaceful fish that needs to be kept amongst other peaceful tank mates. May squabble with other firefish in the tank. Diet: Meaty foods. (copepods, zooplankton) Origin: Indo-pacific, Central Pacific, Indian Ocean Care: Be sure to have a sand substrate. This fish will burrow into the sand to call it a night and as an escape from predation. If no sand substrate available, provide plenty of hiding spaces. Compatibility: These fish should be kept singly, unless, they are paired, or, provided with plenty of room. I don't have any experience keeping more than one at a time though. One of those things that I have always assumed.8) Another reminder to measure twice, cut once.........(Thanks Annick) Personal observations: This is a timid fish that needs to be kept with other mellow fish. I lost my last firefish to a jumping accident. I possibly blame a yellow tang for being too boisterous and scaring it into jumping. I really like the striking colors and the "flicking" of the dorsal fin. I plan on adding a pair (hopefully) to my nano soon. A little rusty with this species. It's been a while since I've kept one. Please share your experiences and pictures.