The Exquisite Firefish is a slender, elongated dartfish whose yellow-to-white forebody grades into a dusky purple rear, with pink-to-purple markings across the head, red and purple banding through the dorsal and anal fins, and orange-red lobes on the tail. It was described from the Western Indian Ocean and Red Sea, where it occupies deep outer-reef slopes over sand and rubble in clear water with moderate movement. Adults reach roughly 3.5 inches. The original description separated it from Nemateleotris decora on the basis of a more slender body, longer snout, a usually shorter first dorsal spine, and yellow coloration extending farther toward the tail, though a later revision did not regard those differences as sufficient to support separate-species status.

Adult housing begins at 30 gallons, and the layout matters more than raw volume. Build substantial rockwork with narrow cracks, caves, and crevices so the fish always has an immediate bolt-hole within a body length or two, and leave open water in front of that refuge where it can hover and intercept drifting food. A sand or sand-and-rubble bed mirrors the natural substrate. Moderate flow suits the species well, since it habitually faces into the current while feeding. A mature, stable system is the right destination for this fish.

A tight-fitting lid or fine mesh cover is not optional. Startled firefish jump readily, and gaps around overflows, return plumbing, and light mounts should be closed off along with the main opening. Given a secure top, a settled tank, and a reliable retreat, this is an undemanding and long-hovering centerpiece for a small to midsize reef.