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Bairdiella chrysoura, commonly known as the Silver Perch or Yellowtail Croaker, is a small to medium-sized sciaenid fish found in coastal waters of the western Atlantic Ocean. It is characterized by its silvery body, yellowish fins, and a distinctive croaking sound produced by specialized muscles vibrating against the swim bladder. This species plays an important ecological role in estuarine and coastal ecosystems.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- Overall silvery, often with a darker greenish-gray dorsal surface fading to a bright silver on the sides and belly. Fins are typically yellowish, especially the caudal fin, which gives rise to the 'Yellowtail Croaker' common name. Juveniles may have faint vertical bars.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Silvery body with yellowish fins, Two dorsal fins, deeply notched, Large mouth with small, conical teeth, Prominent lateral line, Produces a croaking sound
- Pinna dorsale
- Two dorsal fins, deeply notched. The first dorsal fin has 10-11 spines; the second dorsal fin has 1 spine and 20-24 soft rays.
- Pinna caudale
- Slightly emarginate to truncate caudal fin, often yellowish.
- Pinna pettorale
- Moderately long pectoral fins, typically yellowish.
- Pinne distintive
- Anal fin with 2 spines and 8-9 soft rays. Pelvic fins thoracic.
Consigli per l'identificazione
Coloration
Look for the overall silvery body and distinct yellowish tint to the fins, particularly the caudal fin.
Dorsal Fins
Note the two distinct dorsal fins, with the first being spiny and the second having a single spine followed by numerous soft rays, separated by a deep notch.
Sound Production
If handled or disturbed, they may produce a characteristic croaking or drumming sound, a hallmark of the Sciaenidae family.
Size
Adults typically range from 15-25 cm (6-10 inches) in length, with a maximum recorded size of about 30 cm (12 inches).
Habitat
- Tipo di acqua
- brackish
- Profondità
- Typically found in shallow coastal waters, estuaries, bays, and lagoons, from near the surface to depths of about 20 meters (65 feet).
- Ambiente
- Prefers soft bottoms (sand, mud) in areas with seagrass beds, oyster reefs, and other structured habitats. Tolerant of a wide range of salinities, often moving into lower salinity estuarine areas.
- Areale geografico
- Western Atlantic Ocean, from Massachusetts, USA, south to Florida, and throughout the Gulf of Mexico to the Yucatán Peninsula, Mexico.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: semi-aggressive
- Dieta: carnivore
- Dimensione minima della vasca: 120 gallons
- Temperatura: 72-78°F (22-26°C)
- Livello di pH: 8.1-8.4
- Durezza: 8-12 dKH
- Compatibilità: Can be kept with other similarly sized, semi-aggressive marine fish. Avoid very small or overly aggressive tank mates. May prey on smaller invertebrates.
- Requisiti speciali: Requires a well-established marine aquarium with good filtration and plenty of open swimming space. A sandy substrate is beneficial as they may root around in it. Provide some rockwork for shelter. Sensitive to poor water quality.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning typically occurs from spring to late summer, with peak abundance often observed during these warmer months in coastal areas.
- Prezzo di mercato: Low to moderate, depending on region and demand.
- Importanza commerciale: medium
- Sapore: Mild, slightly sweet flavor.
- Consistenza: Flaky, white flesh.
- Metodi di cottura: Frying, Baking, Grilling, Steaming
- Valore nutrizionale: Good source of lean protein and omega-3 fatty acids.
Fatti chiave
Sound Productionbehavior
Bairdiella chrysoura, like other members of the Sciaenidae family (croakers and drums), can produce distinct croaking or drumming sounds by vibrating specialized muscles against their swim bladder. This sound is used for communication, especially during spawning.
Estuarine Dependencebehavior
This species is highly dependent on estuarine habitats, particularly during its juvenile stages, utilizing these productive areas as nurseries. Their tolerance to varying salinities allows them to thrive in these dynamic environments.
Dietary Habitsbehavior
Bairdiella chrysoura are opportunistic carnivores, feeding primarily on small crustaceans (like shrimp and crabs), polychaete worms, and small fish. Their diet can shift based on availability and their life stage.
Taxonomic Stabilityinteresting
The taxonomy of Bairdiella chrysoura has been relatively stable, with no major recent changes or widely accepted synonyms that significantly alter its classification from Bairdiella chrysoura (Lacepède, 1802).
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Generally safe to handle. Like all fish, care should be taken to avoid fin spines, which can cause minor punctures. No known venomous spines or toxic properties.
Specie simili
Spot Croaker
Leiostomus xanthurus
The Spot Croaker has a prominent dark spot near the upper base of the pectoral fin and typically has oblique dark bars on its upper sides, which Bairdiella chrysoura lacks. Its caudal fin is also more deeply emarginate.
Atlantic Croaker
Micropogonias undulatus
The Atlantic Croaker has small barbels on its chin and a more oblique mouth. Its body is often brassy or brownish with wavy dark lines, differing from the silvery, yellowish-finned Bairdiella chrysoura.
Sand Seatrout
Cynoscion arenarius
Sand Seatrout have a more elongated, slender body and typically lack the yellowish fins of Bairdiella chrysoura. They also have two prominent canine teeth in the upper jaw, which are absent in Bairdiella chrysoura.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Acanthuriformes
- Famiglia
- Sciaenidae
- Genere
- Bairdiella
- Specie
- chrysoura
Esplora Corvina
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