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Ocyurus chrysurus, commonly known as the Yellowtail Snapper or Guaiúba, is a highly prized marine fish belonging to the snapper family, Lutjanidae. It is characterized by its distinctive yellow caudal fin and a prominent yellow stripe running along its flank. This species is well-regarded for its culinary quality and is a popular target for both commercial and recreational fisheries throughout its range. It exhibits schooling behavior, particularly when young, and is often found near coral reefs, rocky bottoms, and seagrass beds.
Características físicas
- Formato do corpo
- torpedo
- Coloração
- The dorsal side is typically olive to bluish-green, fading to white or silvery on the belly. A prominent, bright yellow stripe runs from the snout through the eye to the caudal fin, which is entirely bright yellow. The dorsal and anal fins are often yellowish, while the pectoral and pelvic fins are translucent to whitish.
- Tipo de escama
- ctenoid
- Posição da boca
- terminal
- Características distintivas
- Bright yellow caudal fin, Prominent yellow lateral stripe, Small, conical teeth in both jaws, Elongated, fusiform body
- Nadadeira dorsal
- Single dorsal fin, deeply notched, with 10 spines and 12-14 soft rays.
- Nadadeira caudal
- Deeply forked, bright yellow caudal fin.
- Nadadeira peitoral
- Long and pointed, extending beyond the anus, with 16-17 rays.
- Nadadeiras características
- Anal fin with 3 spines and 8-9 soft rays. Pelvic fins are relatively small.
Dicas de identificação
Caudal Fin Color
The most definitive feature is the bright yellow, deeply forked caudal (tail) fin.
Lateral Stripe
A distinct, bright yellow stripe runs from the snout, through the eye, and along the lateral line to the caudal fin.
Body Shape
Its elongated, fusiform body is characteristic of a fast-swimming pelagic species, though it is reef-associated.
Dorsal Fin
Observe the single, deeply notched dorsal fin with its specific spine and ray count (10 spines, 12-14 soft rays).
Habitat
- Tipo de água
- saltwater
- Profundidade
- Typically found in depths ranging from 10 to 70 meters (33 to 230 feet), but can occur deeper, up to 180 meters (590 feet).
- Ambiente
- Associated with coral reefs, rocky outcrops, ledges, and seagrass beds. Juveniles often inhabit shallower seagrass beds for protection, while adults prefer deeper reef environments.
- Distribuição geográfica
- Western Atlantic Ocean, from Massachusetts (rarely) and Bermuda south to southeastern Brazil, including the Gulf of Mexico and the Caribbean Sea.
Informações sobre aquário
- Nível de cuidado: advanced
- Temperamento: semi-aggressive
- Alimentação: carnivore
- Tamanho mínimo do aquário: 500 gallons
- Temperatura: 22-28°C (72-82°F)
- Nível de pH: 8.1-8.4
- Dureza da água: 8-12 dKH
- Compatibilidade: Can be kept with other large, robust fish. Avoid keeping with very small or timid species. May become territorial with conspecifics in smaller tanks.
- Requisitos especiais: Requires a very large aquarium with ample swimming space and plenty of rockwork for shelter. Excellent filtration is essential due to their size and feeding habits. A varied diet of high-quality marine-based foods is crucial.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Available year-round, though fishing regulations may vary by region and season to ensure sustainability.
- Preço de mercado: High
- Importância comercial: high
- Sabor: Mild, sweet, and delicate
- Textura: Flaky, firm, and moist
- Métodos de preparo: Grilled, Baked, Fried, Steamed, Sautéed
- Valor nutricional: Excellent source of lean protein, Omega-3 fatty acids, and essential vitamins and minerals.
Fatos principais
Unique Genusinteresting
Ocyurus chrysurus is the sole member of its genus, Ocyurus, distinguishing it from other snappers in the larger genus Lutjanus.
Schooling Behaviorbehavior
Juvenile Yellowtail Snappers form large schools, often mixing with other species, providing safety in numbers. Adults also school, particularly during spawning aggregations.
Nocturnal Feederbehavior
While active during the day, Yellowtail Snappers are primarily nocturnal feeders, preying on a variety of benthic and pelagic invertebrates and small fish.
Spawning Aggregationsbehavior
This species forms predictable spawning aggregations, often around full moons, which are important for their reproductive success and are targeted by fisheries.
Longevityrecord
Yellowtail Snappers can live for over 15 years, with some individuals recorded to be over 20 years old.
Informações de segurança
Seguro- Nível de segurança: safe
- Venenoso: Não
- Comestibilidade: edible
- Observações de manuseio: No specific handling precautions beyond standard fish handling. Care should be taken with sharp fin spines, as with any fish, to avoid punctures. They are not venomous.
Espécies similares
Lane Snapper
Lutjanus synagris
Lane Snappers have distinct yellow and pink stripes, and a series of dark spots below the dorsal fin, which are absent in Yellowtail Snappers. Their caudal fin is not entirely bright yellow.
Mutton Snapper
Lutjanus analis
Mutton Snappers are generally larger, have a more reddish-pink coloration, and lack the prominent yellow lateral stripe and entirely yellow caudal fin of the Yellowtail Snapper. They also possess a distinct black spot below the anterior soft dorsal rays.
Schoolmaster Snapper
Lutjanus apodus
Schoolmaster Snappers have a more brassy or yellowish-brown body with faint vertical bars and yellow fins, but lack the distinct bright yellow caudal fin and prominent lateral stripe of Ocyurus chrysurus.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Perciformes
- Família
- Lutjanidae
- Gênero
- Ocyurus
- Espécie
- chrysurus
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