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Genypterus brasiliensis, commonly known as Cação-rei or Brazilian Kingklip, is a demersal marine fish belonging to the family Ophidiidae. It is characterized by its elongated, eel-like body and distinctive coloration. This species is of significant commercial importance in its native range, particularly in Brazil and Uruguay, where it is highly valued for its flesh. It inhabits deeper waters, typically over muddy or sandy bottoms, and is a nocturnal predator.
Características físicas
- Formato do corpo
- eel-like
- Coloração
- Dorsal side typically reddish-brown to pinkish, fading to a lighter, often whitish or yellowish ventral side. May have irregular darker blotches or spots along the flanks, which can vary in intensity. Fins often match body coloration.
- Tipo de escama
- cycloid
- Posição da boca
- terminal
- Características distintivas
- Elongated, compressed body tapering to a pointed tail, Large mouth extending beyond the posterior margin of the eye, Prominent canine-like teeth in both jaws, Single, long dorsal fin confluent with the caudal and anal fins, Small, scale-like cycloid scales embedded in the skin
- Nadadeira dorsal
- Single, very long dorsal fin originating just behind the head and extending to the caudal fin, confluent with it.
- Nadadeira caudal
- Pointed, confluent with the dorsal and anal fins, forming a continuous fin margin.
- Nadadeira peitoral
- Small, rounded, located just behind the operculum.
- Nadadeiras características
- Pelvic fins are reduced to a pair of filamentous rays located anterior to the pectoral fins, a characteristic feature of Ophidiidae.
Dicas de identificação
Body Shape
Look for the distinctly elongated, eel-like body that tapers to a pointed tail, characteristic of the Ophidiidae family.
Coloration
Observe the reddish-brown to pinkish dorsal coloration, fading to a lighter belly. Irregular darker blotches may be present.
Fins
Note the continuous dorsal, caudal, and anal fins. The pelvic fins are reduced to two filamentous rays located under the throat.
Mouth and Teeth
Identify the large mouth extending past the eye and the presence of prominent, sharp teeth, indicative of its predatory nature.
Habitat
- Tipo de água
- saltwater
- Profundidade
- Typically found at depths ranging from 50 to 500 meters, occasionally deeper.
- Ambiente
- Demersal, inhabiting continental shelf and slope areas over soft bottoms (mud, sand, shell hash). Often associated with rocky outcrops or areas providing shelter.
- Distribuição geográfica
- Southwestern Atlantic Ocean, primarily off the coasts of Brazil (from Espírito Santo southwards), Uruguay, and Argentina.
Informações sobre aquário
- Nível de cuidado: expert
- Temperamento: aggressive
- Alimentação: carnivore
- Tamanho mínimo do aquário: Not suitable for home aquaria due to size and specialized habitat requirements.
- Temperatura: 10-18°C
- Nível de pH: 7.8-8.4
- Dureza da água: High (marine salinity)
- Compatibilidade: Not compatible with other fish in an aquarium setting due to its predatory nature and size.
- Requisitos especiais: Requires very large, deep-water, cold-water marine systems with specialized filtration and feeding protocols. Not a typical aquarium species.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Available year-round, but fishing efforts may vary seasonally based on weather and reproductive cycles.
- Preço de mercado: High, particularly in South American markets.
- Importância comercial: high
- Sabor: Mild, delicate, slightly sweet
- Textura: Firm, flaky, white flesh
- Métodos de preparo: Baked, Grilled, Fried, Steamed, Poached
- Valor nutricional: Rich in protein, low in fat, good source of Omega-3 fatty acids.
Fatos principais
Nocturnal Hunterbehavior
Cação-rei is primarily a nocturnal predator, emerging from its shelters at night to hunt for crustaceans, cephalopods, and smaller fish.
Deep-Sea Dwellerinteresting
This species is adapted to life in deeper, colder waters, typically found on the continental shelf and slope, highlighting its specialized habitat requirements.
Valued Fisheryinteresting
Despite its deep-water habitat, Cação-rei is a highly sought-after commercial fish, particularly in South American countries, contributing significantly to local fisheries.
Eel-like Appearanceamazing
Its elongated, snake-like body and continuous dorsal, caudal, and anal fins give it a distinct eel-like appearance, though it is not a true eel.
Informações de segurança
Seguro- Nível de segurança: safe
- Venenoso: Não
- Comestibilidade: edible
- Observações de manuseio: No specific handling precautions beyond standard fish handling. Its teeth are sharp, so care should be taken to avoid cuts when handling live specimens or processing catches.
Espécies similares
Congrio-rosa
Genypterus blacodes
G. blacodes (Pink Cusk-eel or Kingklip) is found in cooler waters of the Southern Hemisphere (e.g., New Zealand, Australia, South Africa, Chile). While morphologically similar, G. brasiliensis is distinguished by its specific geographic range in the Southwestern Atlantic and subtle differences in fin ray counts and vertebral numbers, which require expert examination for definitive identification.
Congrio-negro
Genypterus maculatus
G. maculatus (Black Kingklip) is typically darker in coloration, often with distinct dark spots or bands, and generally has a more robust body compared to the more uniformly reddish G. brasiliensis. Its distribution is also more restricted to the southeastern Pacific.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Ophidiiformes
- Família
- Ophidiidae
- Gênero
- Genypterus
- Espécie
- brasiliensis
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