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The Triotto, scientifically known as Rutilus erythrophthalmus, is a freshwater fish belonging to the family Cyprinidae. It is characterized by its deep, laterally compressed body, reddish fins, and distinctive upward-pointing mouth. This species is native to Europe and parts of Asia, inhabiting slow-moving or still waters with abundant aquatic vegetation. It is an omnivorous fish, feeding on a variety of plant matter, invertebrates, and small crustaceans. While not typically a target for commercial fisheries, it is a popular species for recreational angling and plays an important ecological role in its native habitats.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- Dorsal side is typically dark green to brownish-green, fading to silvery flanks and a whitish belly. The most striking feature is the bright red to orange coloration of the pectoral, pelvic, anal, and caudal fins, which intensifies with age and during spawning. The iris of the eye is often reddish-orange.
- Tipo di squame
- cycloid
- Posizione della bocca
- superior
- Caratteristiche distintive
- Deep, laterally compressed body, Bright red to orange fins (especially pectoral, pelvic, anal, and caudal), Upward-pointing mouth (superior mouth), Reddish iris, Lateral line with 37-45 scales
- Pinna dorsale
- Short, with 8-9 branched rays, positioned relatively far back on the body, behind the origin of the pelvic fins.
- Pinna caudale
- Deeply forked, with prominent red coloration.
- Pinna pettorale
- Relatively long, with bright red to orange coloration.
- Pinne distintive
- All paired fins (pectoral and pelvic) and the anal fin are typically bright red or orange, a key distinguishing feature.
Consigli per l'identificazione
Mouth Position
The Triotto has a distinctly upward-pointing (superior) mouth, adapted for feeding at the surface or on submerged vegetation. This differentiates it from the Roach (Rutilus rutilus) which has a terminal mouth.
Fin Coloration
The bright red to orange coloration of the pectoral, pelvic, anal, and caudal fins is a primary identifier. The dorsal fin is usually greyish-brown.
Dorsal Fin Origin
The origin of the dorsal fin is typically behind the origin of the pelvic fins. In contrast, the Roach's dorsal fin origin is usually directly above or slightly in front of the pelvic fin origin.
Body Shape
Possesses a deeper, more compressed body compared to the more slender Roach.
Eye Color
The iris of the eye often has a reddish-orange tint, which can be a helpful, though not always definitive, characteristic.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderate depths, usually less than 5 meters.
- Ambiente
- Prefers slow-moving or still waters such as lakes, ponds, canals, oxbows, and the lower reaches of rivers. Thrives in areas with dense aquatic vegetation (submerged and emergent) which provides cover and food sources. Tolerates a wide range of water conditions but prefers clear water.
- Areale geografico
- Widespread across Europe, from Ireland and Great Britain eastward to Central Asia (e.g., Aral Sea basin). Also introduced to some areas outside its native range, including parts of North America and New Zealand.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: peaceful
- Dieta: omnivore
- Dimensione minima della vasca: 200 liters (50 gallons) for a small group
- Temperatura: 10-22°C (50-72°F)
- Livello di pH: 6.5-8.0
- Durezza: 5-20 dGH
- Compatibilità: Compatible with other peaceful, coldwater fish of similar size. Avoid highly aggressive or fin-nipping species.
- Requisiti speciali: Requires a well-planted tank with open swimming areas. Good filtration is essential. Can be kept in outdoor ponds in suitable climates.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns in spring (April-June) when water temperatures rise. More active and easily caught during warmer months.
- Prezzo di mercato: Low
- Importanza commerciale: low
- Sapore: Mild, somewhat earthy
- Consistenza: Flaky, with numerous small bones
- Metodi di cottura: Frying, Baking, Smoking
- Valore nutrizionale: Good source of protein and omega-3 fatty acids, though not as commonly consumed as other freshwater fish.
Fatti chiave
Upward Gazerbehavior
The Triotto's distinctive upward-pointing mouth is a perfect adaptation for feeding on surface insects and aquatic vegetation, allowing it to efficiently graze from below.
Color Intensitybehavior
The vibrant red coloration of the Triotto's fins intensifies significantly during the breeding season, serving as a visual signal for courtship and territorial displays.
Hybridizationinteresting
Triotto are known to readily hybridize with Roach (Rutilus rutilus), producing fertile offspring that can sometimes make identification challenging in areas where both species coexist.
Vegetation Loverbehavior
This species is highly dependent on dense aquatic vegetation for both food and shelter, making it an excellent indicator of healthy, vegetated freshwater ecosystems.
Introduced Speciesinteresting
Despite being native to Europe and Asia, the Triotto has been introduced to various other parts of the world, sometimes becoming an invasive species that can outcompete native fish.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: No specific handling precautions are required. Handle gently to avoid injury to the fish if practicing catch-and-release. They do not possess venomous spines or any other harmful features.
Specie simili
Roach
Rutilus rutilus
The Roach has a terminal mouth (not upward-pointing), its dorsal fin originates directly above or slightly in front of the pelvic fins, and its fins are typically less intensely red, often more orange-brown or greyish-red, especially the paired fins. The body is generally more slender than the Triotto.
Bream
Abramis brama
Bream have a much deeper, more disc-like body, a protractile, downward-pointing mouth, and much smaller fins relative to their body size. Their coloration is typically bronze to silvery, lacking the bright red fins of the Triotto.
Ide/Orfe
Leuciscus idus
Ide are more elongated and torpedo-shaped than Triotto, with a terminal mouth. While they can have reddish fins, the coloration is usually less intense and the body shape is distinctly different.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Cypriniformes
- Famiglia
- Cyprinidae
- Genere
- Rutilus
- Specie
- Rutilus erythrophthalmus
Esplora Triotto
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