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Seriola dumerili, commonly known as the Greater Amberjack, is a large, predatory pelagic fish belonging to the family Carangidae. It is characterized by its robust, elongated body and a distinctive amber stripe that runs from the snout to the first dorsal fin. This species is highly valued in both commercial and recreational fisheries due to its size, fighting ability, and culinary quality. It is a schooling fish, particularly when juvenile, and often found around reefs, wrecks, and other submerged structures.
Caratteristiche fisiche
- Forma del corpo
- torpedo
- Colorazione
- Dorsal side is typically dark blue to bluish-gray, fading to silvery-white on the ventral side. A distinctive amber or yellowish stripe often runs horizontally from the snout through the eye to the base of the first dorsal fin. Juveniles exhibit vertical bars on their flanks, which fade with age.
- Tipo di squame
- cycloid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Prominent amber stripe from snout to dorsal fin (often fades in larger adults or after death)., First dorsal fin is much shorter than the second dorsal fin., Absence of scutes along the lateral line (unlike some other Carangids)., Large, powerful caudal fin.
- Pinna dorsale
- Two dorsal fins; the first is short with 7-8 spines, the second is much longer with 1 spine and 29-35 soft rays.
- Pinna caudale
- Deeply forked, powerful caudal fin.
- Pinna pettorale
- Relatively short, falcate pectoral fins.
- Pinne distintive
- Anal fin similar in shape and size to the second dorsal fin, preceded by 2 detached spines (often embedded in adults).
Consigli per l'identificazione
Amber Stripe
Look for the characteristic amber or yellowish stripe running from the snout through the eye to the first dorsal fin. This stripe can be more pronounced in live fish and juveniles.
Dorsal Fins
Note the significant difference in size between the short, spiny first dorsal fin and the much longer, soft-rayed second dorsal fin.
Lateral Line
Unlike many other jacks, Seriola dumerili lacks prominent scutes (bony plates) along its lateral line, which is a key distinguishing feature.
Body Shape
Its robust, elongated, and somewhat compressed body, tapering towards the caudal peduncle, is typical for a fast-swimming pelagic predator.
Juvenile Markings
Juveniles have distinct vertical bars on their flanks, which fade as they mature into adults.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found from near-surface waters down to 360 meters (1,180 feet), but most commonly encountered between 10-100 meters (33-330 feet).
- Ambiente
- Pelagic and demersal, inhabiting offshore reefs, rocky outcrops, wrecks, oil rigs, and other submerged structures. Juveniles are often associated with floating Sargassum mats or other debris in open water.
- Areale geografico
- Circumglobal in tropical and temperate waters. Found in the Atlantic Ocean (including the Mediterranean Sea and Gulf of Mexico), Pacific Ocean, and Indian Ocean. Absent from the eastern Pacific and central Pacific islands.
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: Not suitable for home aquaria due to immense size and schooling nature. Requires public aquarium-scale exhibits.
- Temperatura: 18-24°C (64-75°F)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Only compatible with other large, fast-swimming predatory fish in very large public aquarium settings. Not suitable for typical community tanks.
- Requisiti speciali: Requires extremely large, open-ocean-like environments with strong filtration and significant water movement. High metabolic rate necessitates frequent, large feedings of high-quality marine prey.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning typically occurs in spring and summer, with peak availability for fishing often coinciding with these warmer months, though they can be caught year-round in some regions.
- Prezzo di mercato: Varies significantly by region and season, often high due to demand for fresh fillets and sashimi.
- Importanza commerciale: high
- Sapore: Mild to medium-strong, rich, and savory.
- Consistenza: Firm, meaty, and flaky when cooked.
- Metodi di cottura: Grilling, Baking, Pan-searing, Sashimi, Ceviche
- Valore nutrizionale: Excellent source of lean protein, Omega-3 fatty acids, and various vitamins and minerals (e.g., B12, selenium, phosphorus).
Fatti chiave
Top Predatorbehavior
Greater Amberjacks are apex predators in their reef and offshore environments, playing a crucial role in controlling populations of smaller fish and invertebrates.
Longevityinteresting
They can live for over 15 years, with some individuals recorded to be over 17 years old.
Size Mattersrecord
This species is the largest of the jacks in the genus Seriola, capable of reaching lengths of up to 1.9 meters (6.2 feet) and weights exceeding 80 kg (176 lbs).
Schooling Behaviorbehavior
While adults can be solitary, juveniles and sub-adults often form large schools, particularly around structure, offering protection from larger predators.
Migratory Patternsbehavior
Greater Amberjacks undertake seasonal migrations, moving to deeper, warmer waters during colder months and shallower waters for spawning.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Greater Amberjack are powerful fish and can inflict injuries with their strong tail (caudal fin) during handling. Care should be taken to control the fish, especially when gaffing or bringing aboard a vessel. Their gill plates and fin spines can also be sharp. No venomous spines are present.
Specie simili
Lesser Amberjack
Seriola fasciata
Smaller adult size (typically under 1 meter), more compressed body, and a more pronounced, often darker, diagonal stripe from the eye to the dorsal fin. Juveniles have more distinct vertical bars that persist longer.
Almaco Jack
Seriola rivoliana
Has a much deeper body profile, especially anteriorly, and a more steeply sloped head. The second dorsal and anal fins are noticeably taller and more falcate (sickle-shaped) than those of the Greater Amberjack. The amber stripe is often less distinct or absent.
Yellowtail Amberjack
Seriola lalandi
Generally has a more yellowish caudal fin and a more distinct yellow stripe along the lateral line. Its geographic distribution is primarily in the Pacific and Southern Atlantic, with some overlap. Morphologically, S. dumerili tends to be more robust.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Carangiformes
- Famiglia
- Carangidae
- Genere
- Seriola
- Specie
- dumerili
Esplora Greater Amberjack
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