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Chelidonichthys cuculus, commonly known as the Red Gurnard, is a demersal fish belonging to the family Triglidae. It is characterized by its distinctive head shape, large pectoral fins, and vibrant coloration. This species is a commercially important fish in many parts of its range and is recognized for its unique sensory capabilities provided by its modified pectoral fin rays.
Características físicas
- Formato do corpo
- elongated
- Coloração
- The dorsal surface is typically bright red or reddish-pink, fading to a paler pink or white on the ventral side. The pectoral fins are often brightly colored, with iridescent blue or green spots and a dark margin, particularly noticeable when spread. Juveniles may exhibit more mottled patterns.
- Tipo de escama
- ctenoid
- Posição da boca
- terminal
- Características distintivas
- Large, bony head with a steep profile and prominent ridges., Three free, finger-like rays on each pectoral fin, used for 'walking' on the seabed and sensing prey., Large, fan-like pectoral fins, often with striking coloration on the inner surface., Two dorsal fins, the first spiny and the second soft-rayed.
- Nadadeira dorsal
- Two dorsal fins: D1 VIII-X (spines); D2 17-18 (soft rays). The first dorsal fin is relatively high with strong spines.
- Nadadeira caudal
- Caudal fin is truncate or slightly emarginate.
- Nadadeira peitoral
- Pectoral fins are very large and fan-like, extending beyond the origin of the anal fin. The three lowermost rays are free and detached from the main fin.
- Nadadeiras características
- Pelvic fins are thoracic, located beneath the pectoral fins.
Dicas de identificação
Coloration
Look for the characteristic bright red to reddish-pink body color, which is a primary identifier for this species among gurnards.
Pectoral Fins
Observe the large, fan-like pectoral fins. The inner surface often displays iridescent blue or green spots and a dark margin, especially when the fish is stressed or displaying. Crucially, note the three free, detached rays at the bottom of each pectoral fin.
Head Shape
The head is large, bony, and armored with prominent ridges and spines, giving it a somewhat angular profile. The snout is relatively blunt.
Lateral Line
The lateral line is clearly visible and runs along the body, often with small bony plates or scutes.
Habitat
- Tipo de água
- saltwater
- Profundidade
- Typically found on sandy, muddy, or gravelly bottoms at depths ranging from 20 to 300 meters, though occasionally encountered in shallower or deeper waters (up to 600 meters).
- Ambiente
- Demersal, preferring soft substrates where it can forage for benthic invertebrates and small fish. Often found in coastal waters, continental shelves, and slopes.
- Distribuição geográfica
- Eastern Atlantic Ocean, from Norway and the British Isles south to Mauritania, including the Mediterranean Sea and the Black Sea. Also found around the Azores and Madeira.
Informações sobre aquário
- Nível de cuidado: expert
- Temperamento: semi-aggressive
- Alimentação: carnivore
- Tamanho mínimo do aquário: 500 gallons
- Temperatura: 10-20°C (50-68°F)
- Nível de pH: 8.1-8.4
- Dureza da água: 1.020-1.025 SG
- Compatibilidade: Not suitable for typical home aquariums due to size, specialized diet, and habitat requirements. May be kept in very large public aquariums with appropriate tank mates that can withstand its predatory nature.
- Requisitos especiais: Requires a very large, well-filtered, cold-water marine aquarium with a soft sand or fine gravel substrate for burrowing. Live food (crustaceans, small fish) is essential. Sensitive to water quality fluctuations.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Available year-round, but peak catches often occur during warmer months when they are more active and accessible to fishing gear.
- Preço de mercado: Varies significantly by region and season, generally considered a moderately priced white fish.
- Importância comercial: medium
- Sabor: Mild, sweet, and delicate flavor.
- Textura: Firm, flaky white flesh.
- Métodos de preparo: Baking, Grilling, Frying, Steaming, Used in soups and stews
- Valor nutricional: Good source of lean protein, Omega-3 fatty acids, and various vitamins and minerals.
Fatos principais
Walking Fishbehavior
Red Gurnards use their three free, finger-like pectoral fin rays to 'walk' along the seabed, probing the substrate for food. These rays are highly sensitive chemoreceptors and mechanoreceptors.
Grunting Soundsbehavior
Like other gurnards, Chelidonichthys cuculus can produce grunting or croaking sounds by vibrating its swim bladder using specialized muscles. These sounds are thought to be used for communication, especially during spawning or when disturbed.
Color Changebehavior
The vibrant red coloration of the Red Gurnard can intensify or fade depending on its mood, environment, and reproductive state. When excited or stressed, the colors become more pronounced.
Predatory Pectoralsbehavior
The large, colorful pectoral fins are not just for swimming; they can be rapidly spread to startle predators or to herd small prey into a more accessible position.
Informações de segurança
Venenoso- Nível de segurança: venomous
- Venenoso: Sim
- Comestibilidade: edible
- Observações de manuseio: The Red Gurnard possesses venomous spines in its first dorsal fin and on the operculum (gill covers). While not typically life-threatening, a sting can be very painful, causing localized swelling, redness, and throbbing pain that can last for several hours. Handle with extreme care, using thick gloves or a fish gripper. If stung, immerse the affected area in hot water (as hot as can be tolerated without scalding) for 30-90 minutes to denature the protein-based venom. Seek medical attention if symptoms are severe or persist.
Espécies similares
Grey Gurnard
Eutrigla gurnardus
The Grey Gurnard is typically greyish-brown with darker blotches, lacking the vibrant red coloration of the Red Gurnard. Its pectoral fins are less brightly colored, usually duller with a black spot at the base, and the free rays are less prominent.
Streaked Gurnard
Trigloporus lastoviza
The Streaked Gurnard has a more elongated body and is characterized by distinct dark, horizontal streaks or bands along its flanks. Its coloration is generally reddish-brown to orange, but the streaking is a key differentiator. The pectoral fins are also large but typically lack the intense blue/green iridescence of C. cuculus.
Sapphirine Gurnard
Chelidonichthys lucerna
While also having large, colorful pectoral fins (often with a prominent blue spot), the Sapphirine Gurnard typically has a more brownish or yellowish-brown body coloration, sometimes with reddish tints, but not the uniform bright red of C. cuculus. Its head is also generally broader and less angular.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Scorpaeniformes
- Família
- Triglidae
- Gênero
- Chelidonichthys
- Espécie
- cuculus
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