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Etelis carbunculus, commonly known as the Ruby Snapper, is a deep-dwelling species of snapper found in tropical and subtropical waters of the Indo-Pacific. It is highly prized as a food fish due to its excellent flesh quality. This species is characterized by its vibrant red coloration, elongated body, and deeply forked caudal fin. It is typically found on rocky bottoms, seamounts, and outer reef slopes at considerable depths.
Physical Characteristics
- Body shape
- elongated
- Coloration
- Overall body color is a brilliant ruby red to reddish-pink, often fading to a lighter pink or white on the belly. Fins are typically red. Juveniles may exhibit a slightly paler coloration.
- Scale type
- ctenoid
- Mouth position
- terminal
- Distinctive features
- Deeply forked caudal fin with elongated upper and lower lobes., Large eyes, adapted for low light conditions in deep water., Relatively small mouth with conical teeth., Absence of a black spot on the operculum or lateral line, which distinguishes it from some other snapper species.
- Dorsal fin
- Single dorsal fin, deeply notched, with 10 spines and 10-11 soft rays.
- Tail fin
- Deeply forked caudal fin, with the upper lobe often slightly longer than the lower lobe.
- Pectoral fin
- Long and pointed pectoral fins, typically reaching beyond the anus.
- Distinctive fins
- Pelvic fins are relatively short.
Identification Tips
Coloration
Its vibrant ruby red color is a primary identifier, especially when freshly caught.
Caudal Fin
The deeply forked tail with elongated lobes is a key characteristic.
Dorsal Fin
Note the single, deeply notched dorsal fin with 10 spines.
Habitat Depth
Its occurrence in deep waters (90-400m) helps distinguish it from shallower-dwelling snappers.
Habitat
- Water type
- saltwater
- Depth
- Typically found at depths ranging from 90 to 400 meters (300 to 1,300 feet), occasionally shallower or deeper. Juveniles may be found in shallower waters.
- Environment
- Inhabits rocky bottoms, seamounts, outer reef slopes, and continental shelves. Prefers areas with strong currents and complex topography, which provide shelter and foraging opportunities.
- Geographic range
- Widespread in the Indo-Pacific region, from East Africa to the Hawaiian Islands and French Polynesia, north to Japan, and south to Australia.
Aquarium Information
- Care level: expert
- Temperament: semi-aggressive
- Diet: carnivore
- Minimum tank size: 1000 gallons
- Temperature: 22-26°C (72-79°F)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Not suitable for typical home aquariums due to its large size and deepwater requirements. If kept in a public aquarium, it requires very large, specialized deepwater exhibits with appropriate pressure and temperature controls. Compatible with other large, robust deepwater species.
- Special requirements: Requires extremely large, specialized deepwater aquariums with stable water parameters, excellent filtration, and appropriate lighting to simulate deepwater conditions. Not recommended for private aquarists.
Wild Information
- Conservation status: least concern
- Seasonality: Available year-round, but fishing effort may vary seasonally due to weather conditions and spawning aggregations.
- Market price: High, often fetching premium prices due to its quality and deepwater sourcing.
- Commercial importance: high
- Taste: Mild, sweet, and delicate
- Texture: Firm, flaky, and moist
- Cooking methods: Grilling, Baking, Steaming, Sashimi, Frying
- Nutritional value: Excellent source of lean protein, Omega-3 fatty acids, and essential vitamins and minerals.
Key Facts
Deepwater Dwellerbehavior
The Ruby Snapper is a true deepwater species, typically found at depths where sunlight barely penetrates, hence its large eyes.
Prized Delicacyinteresting
It is one of the most highly sought-after food fish in many parts of its range, particularly in Hawaii where it's known as 'Ehu'.
Elongated Finsamazing
Its deeply forked caudal fin with elongated lobes is a distinctive feature, likely aiding in efficient swimming in its deepwater habitat.
No Black Spotinteresting
Unlike some other snapper species, Etelis carbunculus lacks a prominent black spot on its operculum or lateral line, which helps in identification.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions beyond standard fish handling to avoid fin spines. The spines are not venomous but can cause minor punctures.
Similar Species
Oblique-banded Snapper
Etelis radiosus
E. radiosus typically has a more silvery-pink body with faint oblique bands, and its caudal fin lobes are generally shorter and less elongated than E. carbunculus. It also tends to inhabit slightly shallower depths.
Flame Snapper
Etelis marshi
E. marshi has a more uniformly reddish-orange to pinkish-red coloration and a less deeply forked caudal fin. Its pectoral fins are also shorter, not reaching the anus.
Rusty Jobfish
Aphareus rutilans
While also red and deep-dwelling, Aphareus rutilans has a much more slender body, a more pointed snout, and a less deeply forked caudal fin. Its mouth is also larger and more protractile.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Lutjanidae
- Genus
- Etelis
- Species
- Etelis carbunculus
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