Helfrichi Firefish - Marshall IslandsNemateleotris lavandula The Helfrichi Firefish is very active, hardy and brightly colored. These reef safe fish are very skittish, and shouldn't be housed with aggressive species, or they will spend some of their time hiding. They are known to jump when startled, so be sure to house them in a covered aquarium. This small fish of 3 is full of personality and will make a great addition to smaller aquariums down to 15 gallons or so. Don't house them