Hai una foto? Identifica i pesci all'istante con l'app Fishby.
Apri l'appDescrizione
Salmo trutta fario, commonly known as the Brown Trout (riverine form) or Fario Trout, is a freshwater salmonid fish native to Europe and parts of Asia. It is a highly adaptable and polymorphic species, with 'fario' specifically referring to the non-migratory, stream-dwelling populations. These fish are renowned for their striking coloration, often featuring red and black spots, and their preference for cold, oxygen-rich waters. They are apex predators in their freshwater ecosystems, playing a crucial role in maintaining ecological balance. Their resilience and sporting qualities have made them a popular target for anglers worldwide, leading to extensive introductions outside their native range.
Caratteristiche fisiche
- Forma del corpo
- torpedo
- Colorazione
- Highly variable depending on habitat, diet, and geographic location. Typically olive-brown to golden-brown on the back, fading to yellowish-white or silvery on the flanks and belly. Characterized by numerous dark spots (often black or dark brown) and distinctive red or orange spots, frequently with a pale halo, scattered across the flanks, dorsal fin, and adipose fin. The intensity and number of spots vary greatly.
- Tipo di squame
- cycloid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Adipose fin present (a small, fleshy fin between the dorsal and caudal fins)., Vomerine teeth present, typically in a double row., Large mouth extending beyond the posterior margin of the eye., Absence of distinct parr marks in adults (though present in juveniles)., Red or orange spots with pale halos on flanks.
- Pinna dorsale
- Single dorsal fin, relatively short, with 10-14 rays. Often spotted.
- Pinna caudale
- Caudal fin typically slightly emarginate (forked) in juveniles, becoming more truncate or square in adults. Often unspotted or with faint spots.
- Pinna pettorale
- Paired pectoral fins, relatively small, located ventrally.
- Pinne distintive
- Adipose fin present, often with red or orange spots.
Consigli per l'identificazione
Coloration and Spotting
Look for the characteristic red or orange spots, often with a pale halo, interspersed with black spots on the flanks. The background color is highly variable but generally brownish or olive.
Adipose Fin
The presence of a small, fleshy adipose fin between the dorsal and caudal fins is a key salmonid characteristic. In S. trutta fario, it often bears spots.
Mouth Size
The mouth is relatively large, extending beyond the posterior margin of the eye when closed.
Vomerine Teeth
Careful examination (often requiring a professional) reveals vomerine teeth in a double row, which helps distinguish it from some other salmonids.
Caudal Fin Shape
Adults typically have a square or slightly emarginate (less forked than Atlantic Salmon) caudal fin.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderately deep sections of rivers and streams, often seeking cover under banks, rocks, or submerged vegetation. Can inhabit depths from a few centimeters to several meters.
- Ambiente
- Cold, clear, well-oxygenated rivers, streams, and sometimes lakes. Prefers gravel or rocky substrates for spawning and feeding. Requires stable water temperatures and good water quality. Often found in riffles, runs, and pools with moderate to strong currents.
- Areale geografico
- Native to Europe, from Iceland and Scandinavia south to the Mediterranean basin (including North Africa) and east to the Aral Sea basin. Widely introduced globally, including North America, South America, Australia, New Zealand, and parts of Asia.
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: Not suitable for typical home aquariums; requires very large, specialized, cold-water setups (e.g., public aquariums or research facilities) with strong filtration and flow, often exceeding 1000 gallons for adult specimens.
- Temperatura: 45-65°F (7-18°C)
- Livello di pH: 6.0-8.0
- Durezza: 5-20 dGH
- Compatibilità: Generally solitary or with other large, cold-water predatory fish in extremely large, specialized systems. Highly predatory towards smaller fish.
- Requisiti speciali: Requires extremely cold, highly oxygenated, and pristine water conditions with strong current. Sensitive to water quality fluctuations and elevated temperatures. Not recommended for private aquarists due to size, environmental needs, and predatory nature.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawning typically occurs in autumn (October-December), with peak fishing seasons often in spring and summer, subject to local regulations.
- Prezzo di mercato: Varies significantly by region and size; often sold as a premium freshwater fish. Price per kg can range from 10-30 EUR/USD depending on origin (wild vs. farmed) and market.
- Importanza commerciale: medium
- Sapore: Mild, delicate, and slightly nutty flavor.
- Consistenza: Flaky, firm, and moist.
- Metodi di cottura: Baking, Grilling, Pan-frying, Smoking, Poaching
- Valore nutrizionale: Excellent source of lean protein, Omega-3 fatty acids, Vitamin D, and B vitamins.
Fatti chiave
Polymorphic Speciesbehavior
Salmo trutta is a highly polymorphic species, meaning it exhibits various forms (riverine, lake, anadromous) that are genetically similar but adapted to different environments. 'Fario' specifically refers to the non-migratory, freshwater riverine form.
Indicator Speciesinteresting
Brown trout are often considered an indicator species for water quality due to their preference for cold, clean, and well-oxygenated water. Their presence often signifies a healthy aquatic ecosystem.
Opportunistic Predatorsbehavior
They are highly opportunistic predators, feeding on a wide variety of aquatic and terrestrial invertebrates, smaller fish, and even small amphibians or rodents, depending on availability.
Territorial Naturebehavior
Adult brown trout, especially larger individuals, are highly territorial and will aggressively defend prime feeding and resting lies from other trout.
Longevityinteresting
While many wild brown trout live 3-5 years, in optimal conditions, they can live up to 10-20 years, especially in larger rivers or lakes.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Handle with care to minimize stress and injury to the fish, especially if practicing catch-and-release. Use wet hands or a wet net to avoid removing the protective slime coat. Avoid prolonged exposure to air. Be mindful of sharp teeth when handling.
Specie simili
Sea Trout
Salmo trutta trutta
Sea trout are anadromous forms of Salmo trutta. They are typically more silvery with fewer, less distinct spots when in saltwater, and often grow larger. When they return to freshwater for spawning, their coloration can become similar to 'fario', but they generally retain a more streamlined, silvery appearance and often have a more pronounced fork in the tail.
Lake Trout
Salmo trutta lacustris
Lake trout are lacustrine (lake-dwelling) forms of Salmo trutta. They tend to be larger, more silvery, and often have fewer, fainter spots than riverine forms, adapting to open water environments. Their body shape can be more robust.
Atlantic Salmon
Salmo salar
Atlantic Salmon typically have fewer, larger, and more X-shaped or star-shaped black spots, primarily above the lateral line, and lack the prominent red spots of brown trout. Their caudal fin is more deeply forked, especially in juveniles. The maxilla (upper jaw bone) of Atlantic Salmon typically does not extend beyond the posterior margin of the eye in adults, unlike brown trout.
Rainbow Trout
Oncorhynchus mykiss
Rainbow Trout are characterized by a prominent pink or red stripe along the lateral line and numerous small black spots on the body, dorsal fin, and caudal fin. They lack the red spots with halos typical of brown trout. Their caudal fin is typically more deeply forked and heavily spotted.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Salmoniformes
- Famiglia
- Salmonidae
- Genere
- Salmo
- Specie
- Salmo trutta
Esplora Brown Trout (Riverine Form)
Identifica pesci ovunque
Gratis su iOS, Android e Web. Identificazione tramite foto, dettagli completi sulle specie e molto altro.