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Argyrosomus regius, commonly known as Corvina or Meagre, is a large sciaenid fish highly valued for its flesh and increasingly important in aquaculture. It is characterized by its elongated, robust body and a distinctive golden-bronze coloration, particularly on its flanks. This species is known for its drumming sound produced by specialized muscles vibrating against the swim bladder, especially during spawning.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- Dorsal side is typically dark grey to brownish-bronze, fading to silvery-white on the belly. Flanks often exhibit a golden or coppery sheen, especially in live specimens. Fins are generally dusky.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Large, terminal mouth with small, sharp teeth., Prominent lateral line that extends to the caudal fin., A row of small pores along the lower jaw., Large scales., Ability to produce a drumming sound.
- Pinna dorsale
- Two dorsal fins; the first is short with 9-10 strong spines, the second is much longer with 1 spine and 26-29 soft rays. A deep notch separates the two.
- Pinna caudale
- Truncate to slightly emarginate (straight or slightly indented).
- Pinna pettorale
- Relatively long and pointed, reaching beyond the tip of the pelvic fins.
- Pinne distintive
- Pelvic fins are thoracic, located directly below the pectoral fins, with 1 spine and 5 soft rays. Anal fin has 2 spines and 7-8 soft rays.
Consigli per l'identificazione
Size and Shape
Large, robust, elongated body, typically reaching 1.5-2 meters (5-6.5 feet) in length and weighing up to 50-60 kg (110-132 lbs), though larger specimens up to 2.3 meters and 100 kg have been reported. The body is deepest at the origin of the first dorsal fin.
Coloration
Distinguished by its dark grey to brownish-bronze back, silvery-white belly, and characteristic golden or coppery reflections on the flanks. Fins are generally dark.
Lateral Line
A prominent, continuous lateral line that extends straight to the caudal fin, often appearing silvery or iridescent.
Mouth and Jaw
Large, terminal mouth with a slightly oblique gape. The lower jaw is slightly longer than the upper jaw. Look for the row of small pores along the lower jaw.
Dorsal Fins
Two distinct dorsal fins, separated by a deep notch. The first is spiny and triangular, the second is much longer and soft-rayed.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found from nearshore waters down to about 300 meters (984 feet), but most commonly in shallower coastal areas (15-100m).
- Ambiente
- Prefers sandy or muddy bottoms, often near estuaries, river mouths, and coastal lagoons. Can tolerate a wide range of salinities, entering brackish waters. Forms schools, especially during spawning.
- Areale geografico
- Eastern Atlantic Ocean, from the English Channel south to Senegal, including the Canary Islands. Also widely distributed throughout the Mediterranean Sea and the Black Sea. Has been recorded in the Red Sea via the Suez Canal (Lessepsian migration).
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: Not suitable for home aquaria due to large size and specific environmental needs. Requires very large, specialized public aquarium or research facility tanks (thousands of gallons).
- Temperatura: 16-22°C (61-72°F)
- Livello di pH: 7.8-8.4
- Durezza: High (marine salinity)
- Compatibilità: Not compatible with most other species due to its predatory nature and size. Best kept in species-specific exhibits or with very large, robust fish.
- Requisiti speciali: Requires extremely large volumes of well-filtered, oxygenated marine water. Mimicking natural schooling behavior and providing ample swimming space is crucial. Not a typical aquarium fish.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning season typically occurs from April to July in the Mediterranean and Atlantic, influencing fishing patterns. Available year-round through aquaculture.
- Prezzo di mercato: High, especially for wild-caught specimens. Aquaculture has increased availability and stabilized prices.
- Importanza commerciale: high
- Sapore: Mild, delicate, slightly sweet, often compared to sea bass or snapper.
- Consistenza: Firm, flaky, white flesh with a good fat content.
- Metodi di cottura: Grilling, Baking, Pan-frying, Steaming, Sashimi (high quality, fresh specimens)
- Valore nutrizionale: Excellent source of lean protein, Omega-3 fatty acids, and essential vitamins and minerals (e.g., B vitamins, phosphorus, selenium).
Fatti chiave
The Drumming Fishbehavior
Argyrosomus regius is well-known for its ability to produce a distinctive drumming or croaking sound, especially during the spawning season. This sound is generated by specialized 'drumming' muscles vibrating against its large swim bladder, primarily by males to attract females.
Rapid Growthinteresting
This species exhibits a remarkably fast growth rate, making it a highly suitable candidate for aquaculture. Under optimal conditions, it can reach market size (around 1-2 kg) within 12-18 months.
Estuarine Specialistbehavior
Corvina frequently inhabits estuaries and coastal lagoons, demonstrating a high tolerance for varying salinities. Juveniles often utilize these brackish environments as nursery grounds, benefiting from abundant food and reduced predation.
Lessepsian Migrantevolution
Argyrosomus regius has successfully migrated from the Mediterranean Sea into the Red Sea via the Suez Canal, establishing populations in new territories. This phenomenon is known as Lessepsian migration.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: No specific handling precautions beyond standard fish handling. Large specimens can be powerful and may cause injury if not handled carefully. No venomous spines or toxic properties.
Specie simili
Brown Meagre
Sciaena umbra
Smaller in size (typically up to 70 cm), darker brown coloration, and lacks the prominent golden sheen of Argyrosomus regius. The mouth is subterminal, and the lower jaw is shorter than the upper.
Drummer
Umbrina cirrosa
Possesses a distinctive barbel on its chin, which Argyrosomus regius lacks. Generally smaller and has a more compressed body shape with oblique dark stripes on its flanks.
White Seabass
Atractoscion nobilis
Found in the Eastern Pacific. While also a large sciaenid, it has a more silvery body, a less pronounced golden hue, and a slightly different fin morphology. Its lateral line is also less distinctively golden.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Acanthuriformes
- Famiglia
- Sciaenidae
- Genere
- Argyrosomus
- Specie
- regius
Esplora Corvina
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