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Scophthalmus rhombus, commonly known as the Brill, is a species of flatfish in the family Scophthalmidae. It is characterized by its rhomboidal body shape, typically left-eyed, and a smooth skin texture, lacking the prominent bony tubercles found on its close relative, the Turbot. It is a demersal fish, inhabiting sandy and muddy bottoms in coastal waters.
Caratteristiche fisiche
- Forma del corpo
- flat
- Colorazione
- Dorsal side varies from sandy brown to greenish-brown, often mottled with darker spots and lighter flecks, allowing for excellent camouflage on the seabed. Ventral side is white. Can exhibit rapid color changes to match substrate.
- Tipo di squame
- cycloid
- Posizione della bocca
- superior
- Caratteristiche distintive
- Rhomboidal body shape, broader than many other flatfish., Left-eyed (both eyes on the left side of the head)., Skin is smooth to the touch, lacking the bony tubercles characteristic of the Turbot., Lateral line has a distinct arch above the pectoral fin.
- Pinna dorsale
- Long, originating anterior to the eye, extending almost to the caudal fin. Contains 73-86 soft rays.
- Pinna caudale
- Rounded or slightly truncate, distinct from dorsal and anal fins.
- Pinna pettorale
- Well-developed, present on both sides.
- Pinne distintive
- Anal fin is also long, mirroring the dorsal fin, with 54-64 soft rays. Pelvic fins are small and located anteriorly.
Consigli per l'identificazione
Body Shape and Eyes
Look for a distinctly rhomboidal, flattened body with both eyes on the left side of the head. This immediately distinguishes it from right-eyed flatfish.
Skin Texture
Feel the skin. Brill has a smooth skin texture, unlike the rough, bony tubercles found on the Turbot (Scophthalmus maximus).
Coloration
Observe the dorsal coloration, which is typically mottled brown or greenish-brown, often with lighter and darker spots, providing camouflage. The underside is white.
Lateral Line
Note the distinct arch in the lateral line above the pectoral fin.
Size
Adults typically reach 30-50 cm in length, with a maximum recorded length of about 75 cm and weight of 8 kg.
Habitat
- Tipo di acqua
- saltwater
- Profondità
- Typically found at depths ranging from 5 to 70 meters, occasionally deeper up to 100 meters.
- Ambiente
- Demersal, preferring sandy, muddy, or gravelly bottoms in coastal waters, estuaries, and sometimes brackish lagoons. Often buries itself partially in the substrate.
- Areale geografico
- Northeastern Atlantic Ocean, from Norway south to Morocco, including the North Sea, Baltic Sea (western parts), English Channel, Bay of Biscay, and the Mediterranean Sea.
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: Not suitable for typical home aquariums due to size and specialized needs. Requires very large, specialized public aquarium setups.
- Temperatura: 10-18°C (50-64°F)
- Livello di pH: 7.8-8.4
- Durezza: High (marine salinity)
- Compatibilità: Not compatible with most other fish due to predatory nature and specific environmental requirements. Best kept in species-specific exhibits if at all.
- Requisiti speciali: Requires a very large tank with a soft substrate for burrowing, excellent filtration, and a constant supply of live or fresh dead fish and crustaceans. Not recommended for private aquarists.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Available year-round, but peak fishing seasons can vary regionally, often more abundant in cooler months.
- Prezzo di mercato: High
- Importanza commerciale: medium
- Sapore: Delicate, mild, slightly sweet
- Consistenza: Firm, flaky, white flesh
- Metodi di cottura: Baked, Grilled, Pan-fried, Steamed, Poached
- Valore nutrizionale: Excellent source of lean protein, Omega-3 fatty acids, and various vitamins and minerals (e.g., B12, selenium).
Fatti chiave
Master of Camouflagebehavior
The Brill is an expert at camouflage, capable of rapidly changing its skin coloration and pattern to perfectly match the surrounding seabed, making it incredibly difficult to spot.
Left-Eyed Flatfishinteresting
Like all members of the family Scophthalmidae, the Brill is a 'left-eyed' flatfish, meaning both eyes migrate to the left side of its head during larval development.
Dietary Habitsbehavior
As an opportunistic predator, the Brill primarily feeds on smaller fish (such as sand eels, gobies, and small cod), crustaceans, and mollusks found on or near the seabed.
Distinguishing from Turbotinteresting
The most reliable way to distinguish a Brill from a Turbot (Scophthalmus maximus) is by feeling its skin: Brill has smooth skin, while Turbot has prominent bony tubercles.
Spawning Behaviorbehavior
Brill typically spawn in spring and early summer (April to August) in shallower coastal waters, releasing pelagic eggs that drift in the water column before hatching.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: No specific handling precautions are required beyond standard fish handling practices. Ensure a firm grip to prevent the fish from slipping. No venomous spines or toxic secretions.
Specie simili
Turbot
Scophthalmus maximus
The Turbot has a rough skin texture due to numerous bony tubercles (ossifications) scattered over its upper surface, whereas the Brill has smooth skin. Turbot also tends to be more circular in shape compared to the Brill's more rhomboidal form.
Dab
Limanda limanda
The Dab is a right-eyed flatfish (eyes on the right side of the head) and has a more oval body shape. Its lateral line has a strong curve above the pectoral fin, but it is distinctly different from the Brill's left-eyed orientation and smoother body.
Plaice
Pleuronectes platessa
Plaice is a right-eyed flatfish and is easily identified by its distinctive orange or red spots on its dorsal surface. Its body shape is also more oval than the Brill's.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Pleuronectiformes
- Famiglia
- Scophthalmidae
- Genere
- Scophthalmus
- Specie
- Scophthalmus rhombus
Esplora Brill
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