Longspine Snapper

The longspine snapper, also called the flame snapper, is a deepwater member of the snapper family found across the Indo-Pacific from East Africa to Hawaii and beyond. It inhabits steep offshore slopes and drop-offs at considerable depth, well below the range of most reef-associated snapper species, and is a prized target of deep-drop line fishing. Its vivid red coloration, typical of many deepwater fish, appears nearly black at depth where red wavelengths of light are absorbed, functioning as effective camouflage. The species is named for the elongated filament that extends from the rear of the dorsal fin in adults, a distinctive trait shared with a few close relatives in the genus Etelis. It grows to a substantial size for a snapper and can live for several decades.

Identify the longspine snapper by its slender, elongated red body and the characteristic filament trailing from the back of the dorsal fin.

• Bright rosy-red to crimson overall coloration
• Deeply forked tail fin
• Large eyes adapted to dim, deep-water light
• Long, thread-like extension on the posterior dorsal fin rays It closely resembles the shorter-finned Etelis carbunculus (deepwater red snapper), but that species lacks the pronounced dorsal filament and has a comparatively deeper body. The elongated dorsal filament and slimmer, more torpedo-shaped body are the most reliable distinguishing features of E. coruscans.

Longspine snapper occupy deep, steep offshore slopes, seamounts, and drop-offs across a broad Indo-Pacific range, from East Africa and the Red Sea eastward to Hawaii and French Polynesia. They are typically found between roughly 100 and 400 meters, often deeper than most other commercially targeted snapper species, favoring hard bottom near steep bathymetric relief where currents concentrate prey. Because of this depth preference, they are rarely encountered by recreational divers and are instead caught primarily using deep-drop or electric reel fishing gear. Populations tend to aggregate over specific bank and slope features, making localized areas important for both the species and the fisheries that target it.

Longspine snapper are active predators that feed on small fish, squid, and deepwater crustaceans, using large eyes to hunt effectively in the dim light of their deep habitat. They are generally solitary to loosely aggregated rather than forming tight schools, often associating with specific slope or seamount features rather than roaming widely. Reproduction involves pelagic spawning, with eggs and larvae drifting in open water before juveniles eventually settle into deeper adult habitat. Growth is relatively slow and longevity can exceed several decades, traits that make deepwater snapper populations particularly vulnerable to overfishing since they cannot quickly rebound from heavy harvest.