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Sphyraena viridensis, commonly known as the Barracuda-bicuda, is a predatory marine fish belonging to the family Sphyraenidae. It is characterized by its elongated, cylindrical body, powerful jaws, and sharp, conical teeth. This species is an active pelagic predator, often found in coastal waters, and is known for its swift movements and ambush hunting tactics. It plays a significant ecological role as a top predator in its habitat.
Características físicas
- Formato do corpo
- torpedo
- Coloração
- Dorsal side typically dark grey to greenish-blue, fading to silvery-white on the flanks and belly. Often exhibits faint, irregular dark bars or blotches on the sides, which can be more pronounced in juveniles or when stressed. The caudal fin is often yellowish, especially in younger individuals, giving rise to the 'Yellowmouth Barracuda' common name.
- Tipo de escama
- cycloid
- Posição da boca
- superior
- Características distintivas
- Elongated, cylindrical body with a pointed head., Large, prominent mouth extending to below the eye., Two distinct dorsal fins, widely separated., Powerful, conical teeth of varying sizes, including large canines., Lateral line is straight and prominent.
- Nadadeira dorsal
- Two widely separated dorsal fins. The first dorsal fin has 5 strong spines; the second dorsal fin has 1 spine and 9 soft rays. The first dorsal fin originates posterior to the pectoral fin base.
- Nadadeira caudal
- Strongly forked caudal fin, often yellowish.
- Nadadeira peitoral
- Relatively small, positioned low on the body.
- Nadadeiras características
- Pelvic fins are small and abdominal, located beneath the first dorsal fin.
Dicas de identificação
Body Shape and Size
Look for a long, slender, torpedo-shaped body, typically reaching up to 100-120 cm (39-47 inches) in length, with some individuals exceeding 150 cm (59 inches) and weights up to 12 kg (26 lbs).
Mouth and Teeth
Observe the large, pointed head with a prominent lower jaw extending beyond the upper jaw. The mouth is armed with numerous sharp, conical teeth, including larger canines, visible even when the mouth is closed.
Dorsal Fins
Note the two distinctly separated dorsal fins. The first dorsal fin is spiny, and the second is soft-rayed. This separation is a key barracuda characteristic.
Coloration
Identify the dark grey to greenish-blue back, silvery sides, and white belly. Faint, irregular dark bars or blotches may be present on the sides, especially in younger fish. The yellowish caudal fin is often a good indicator.
Lateral Line
The lateral line is straight and runs along the midline of the body, distinguishing it from some other elongated fish species.
Habitat
- Tipo de água
- saltwater
- Profundidade
- Typically found in shallow coastal waters from the surface down to about 100 meters (330 feet), but can occasionally be found deeper.
- Ambiente
- Prefers rocky reefs, seagrass beds, sandy bottoms, and open pelagic waters near the coast. Often associated with structures like jetties, wrecks, and offshore platforms. Juveniles may inhabit estuaries and sheltered bays.
- Distribuição geográfica
- Primarily found in the Mediterranean Sea and the eastern Atlantic Ocean, from the Canary Islands and Madeira north to the Bay of Biscay, and south along the West African coast. Its range has been expanding in recent decades, possibly due to climate change, with increasing observations in the northern Mediterranean and even into the Black Sea.
Informações sobre aquário
- Nível de cuidado: expert
- Temperamento: aggressive
- Alimentação: carnivore
- Tamanho mínimo do aquário: 2000 gallons (7570 liters)
- Temperatura: 22-28°C (72-82°F)
- Nível de pH: 8.1-8.4
- Dureza da água: 8-12 dKH
- Compatibilidade: Not suitable for community tanks. Can be kept with very large, robust, and equally aggressive fish, but generally best kept alone or in species-specific displays.
- Requisitos especiais: Requires an extremely large aquarium with ample swimming space. Excellent filtration is essential due to its predatory diet. Live or fresh dead fish and crustaceans are preferred. Not typically kept in home aquaria due to size and predatory nature; more common in public aquariums.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Present year-round in its range, but fishing activity may vary seasonally based on local regulations and migratory patterns.
- Preço de mercado: Varies by region and size, generally moderate to high for food fish.
- Importância comercial: medium
- Sabor: Mild, firm, white flesh.
- Textura: Firm, flaky.
- Métodos de preparo: Grilling, Baking, Frying, Broiling
- Valor nutricional: Good source of protein, omega-3 fatty acids, and various vitamins and minerals. Caution advised regarding ciguatera toxin in some regions.
Fatos principais
Ambush Predatorbehavior
Sphyraena viridensis is a classic ambush predator, often lurking motionless near structures or in open water, waiting for unsuspecting prey to pass by before launching a rapid, powerful strike.
Dietary Habitsbehavior
Its diet consists primarily of other fish, including mullets, sardines, anchovies, and small scombrids. It will also consume cephalopods and crustaceans opportunistically.
Schooling Behaviorbehavior
While large adults are often solitary, juveniles and sub-adults frequently form schools, sometimes quite large, for protection and more efficient hunting.
Range Expansionevolution
Observations suggest that Sphyraena viridensis has been expanding its geographic range northward in the Mediterranean Sea and into the Atlantic, potentially linked to rising sea temperatures.
Ciguatera Riskinteresting
Larger barracudas, including S. viridensis, can accumulate ciguatera toxins by consuming smaller fish that have fed on toxic dinoflagellates. This can lead to ciguatera fish poisoning in humans.
Informações de segurança
Manusear com cuidado- Nível de segurança: caution
- Venenoso: Não
- Comestibilidade: edible
- Observações de manuseio: Barracudas possess extremely sharp teeth and powerful jaws. Exercise extreme caution when handling, especially if caught by anglers. Use appropriate tools (pliers, dehookers) to remove hooks. Avoid placing hands near the mouth. While not typically aggressive towards humans, they can strike if provoked or if they mistake shiny objects (jewelry, lures) for prey. There is a risk of ciguatera poisoning from consuming larger specimens, particularly in certain regions; check local advisories.
Espécies similares
European Barracuda
Sphyraena sphyraena
Sphyraena viridensis typically has a more yellowish caudal fin, especially when young, and often exhibits more distinct, though sometimes faint, vertical bars on its flanks. S. sphyraena generally has a darker, more uniformly colored caudal fin and less pronounced body markings. Genetic analysis is often required for definitive identification in areas of sympatry.
Great Barracuda
Sphyraena barracuda
The Great Barracuda (S. barracuda) is generally much larger, can have irregular black blotches or spots on its lower flanks, and often has a more pronounced, darker caudal fin with white tips on the lobes. Its geographic range is primarily tropical and subtropical Atlantic, Indo-Pacific, and Caribbean, with limited overlap with S. viridensis.
Guinean Barracuda
Sphyraena afra
Sphyraena afra is found along the West African coast and can overlap with S. viridensis. It typically has more distinct, dark, wavy vertical bars on its sides and a generally darker overall coloration. Morphometric and meristic counts are often necessary for precise differentiation.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Scombriformes
- Família
- Sphyraenidae
- Gênero
- Sphyraena
- Espécie
- viridensis
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