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Haemulon chrysargyreum, commonly known as the Corcoroca or Smallmouth Grunt, is a species of marine ray-finned fish belonging to the family Haemulidae, the grunts. It is characterized by its slender body, distinctive coloration, and nocturnal feeding habits. This species is often found in schools over coral reefs and rocky bottoms.
Características físicas
- Formato do corpo
- elongated
- Coloração
- Silvery-white to yellowish body with 6-8 prominent, narrow, bright yellow to golden-orange longitudinal stripes along the sides. The fins are typically yellowish, and the inside of the mouth is bright yellow or orange, a key diagnostic feature. Juveniles may have a more pronounced dark spot at the base of the caudal fin.
- Tipo de escama
- ctenoid
- Posição da boca
- terminal
- Características distintivas
- Bright yellow to golden-orange longitudinal stripes, Bright yellow or orange coloration inside the mouth, Relatively small mouth compared to other grunts, Slender body profile
- Nadadeira dorsal
- Single dorsal fin, deeply notched, with 12 spines and 13-14 soft rays. The spinous portion is longer than the soft-rayed portion.
- Nadadeira caudal
- Forked caudal fin, typically yellowish.
- Nadadeira peitoral
- Long and pointed pectoral fins, extending beyond the anus in adults.
- Nadadeiras características
- Anal fin with 3 spines and 9 soft rays. Pelvic fins are thoracic.
Dicas de identificação
Body Coloration and Stripes
Look for the distinctive silvery-white to yellowish body with 6-8 bright yellow to golden-orange longitudinal stripes. These stripes are usually continuous and well-defined.
Mouth Color
The most reliable field mark is the bright yellow or orange coloration inside the mouth, which is visible when the fish opens its mouth, especially during feeding or 'grunting' behavior.
Body Shape
Note the relatively slender and elongated body compared to many other grunt species.
Mouth Size
Observe the relatively small mouth, which is characteristic of this species within the Haemulon genus.
Habitat
- Tipo de água
- saltwater
- Profundidade
- Typically found in depths ranging from 1 to 60 meters (3 to 200 feet), most commonly between 5 and 30 meters.
- Ambiente
- Inhabits clear coastal waters, primarily associated with coral reefs, rocky bottoms, and occasionally seagrass beds. Juveniles may be found in shallower, protected areas like mangroves.
- Distribuição geográfica
- Western Atlantic Ocean, from Bermuda and Florida (USA) south through the Caribbean Sea, Gulf of Mexico, and along the coast of Central and South America to Brazil.
Informações sobre aquário
- Nível de cuidado: intermediate
- Temperamento: peaceful
- Alimentação: carnivore
- Tamanho mínimo do aquário: 180 gallons
- Temperatura: 72-78°F (22-26°C)
- Nível de pH: 8.1-8.4
- Dureza da água: 8-12 dKH
- Compatibilidade: Generally compatible with other peaceful to semi-aggressive marine fish of similar size. Avoid housing with very aggressive species or those small enough to be considered prey. Best kept in schools.
- Requisitos especiais: Requires a well-established marine aquarium with ample swimming space and plenty of rockwork for shelter. A sand bed is beneficial as they may sift through it. Excellent water quality and stable parameters are crucial. They are nocturnal feeders and should be fed after lights out or during dim lighting conditions.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: No specific seasonal restrictions for fishing, but local regulations may apply.
- Preço de mercado: Low to moderate
- Importância comercial: low
- Sabor: Mild, white flesh
- Textura: Flaky, tender
- Métodos de preparo: fried, baked, grilled, steamed
- Valor nutricional: Good source of lean protein and omega-3 fatty acids.
Fatos principais
Nocturnal Foragerbehavior
Corcorocas are primarily nocturnal feeders, emerging from their daytime schooling aggregations to forage over sandy and rubble bottoms for small invertebrates.
Grunting Soundinteresting
Like other grunts, Haemulon chrysargyreum produces a characteristic 'grunting' sound by grinding its pharyngeal teeth, which is amplified by the swim bladder. This sound is often heard when the fish is stressed or caught.
Schooling Behaviorbehavior
During the day, Corcorocas form large, often dense, schools over reefs or rocky outcrops, providing safety in numbers from predators. These schools disperse at night for feeding.
Dietary Habitsbehavior
Their diet consists mainly of small benthic invertebrates, including crustaceans (shrimps, crabs), polychaete worms, and other small organisms found in the substrate.
Taxonomic Stabilityinteresting
The taxonomy of Haemulon chrysargyreum has been relatively stable, with no major recent taxonomic changes or widely accepted synonyms beyond its common names.
Informações de segurança
Seguro- Nível de segurança: safe
- Venenoso: Não
- Comestibilidade: edible
- Observações de manuseio: No specific handling precautions beyond standard fish handling. Spines on the dorsal and anal fins can be sharp, so care should be taken to avoid punctures. Not known to be venomous or toxic.
Espécies similares
French Grunt
Haemulon flavolineatum
French Grunts have yellow stripes that are typically diagonal or wavy, especially on the upper body, and often break up into spots posteriorly. Their mouth interior is usually white or pale, not bright yellow/orange.
White Grunt
Haemulon plumierii
White Grunts have a more robust body and typically exhibit blue-grey stripes or spots on a silvery background. Their mouth interior is usually red or orange, but not the distinct bright yellow of H. chrysargyreum, and their stripes are not as uniformly yellow and longitudinal.
Tomtate Grunt
Haemulon aurolineatum
Tomtate Grunts have a single, prominent dark stripe along the lateral line, and their overall coloration is more silvery with less pronounced yellow. Their mouth interior is typically white.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Perciformes
- Família
- Haemulidae
- Gênero
- Haemulon
- Espécie
- chrysargyreum
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