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Apri l'appDescrizione
Telestes muticellus, commonly known as the Vairone, is a small to medium-sized freshwater fish belonging to the family Cyprinidae. It is characterized by its elongated, fusiform body, adapted for life in flowing waters. This species is endemic to the Italian Peninsula and parts of Switzerland, inhabiting clear, oxygen-rich streams and rivers. It plays an important ecological role as both a consumer of invertebrates and a prey item for larger fish and piscivorous birds. Its conservation status is of concern in some areas due to habitat degradation and competition with introduced species.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- Dorsal side is typically dark olive-green to brownish, fading to silvery-white on the flanks and belly. A distinct dark lateral stripe often runs from the operculum to the caudal peduncle, sometimes more pronounced in juveniles or during spawning. Fins are generally translucent or slightly yellowish.
- Tipo di squame
- cycloid
- Posizione della bocca
- subterminal
- Caratteristiche distintive
- Relatively small, subterminal mouth., Absence of barbels., Lateral line complete, with 50-60 scales., Typically 8-9 branched rays in the dorsal fin and 8-10 in the anal fin.
- Pinna dorsale
- Single, relatively short dorsal fin positioned midway along the back, with 3 unbranched and 8-9 branched rays.
- Pinna caudale
- Forked caudal fin, moderately emarginate.
- Pinna pettorale
- Paired pectoral fins are relatively small.
- Pinne distintive
- Pelvic fins are abdominal, positioned below the dorsal fin. All fins are generally rounded at their tips.
Consigli per l'identificazione
Body Shape and Size
Elongated, slender body, typically reaching 10-20 cm in length, with a maximum recorded size of about 25 cm.
Mouth Position
Small, subterminal mouth, lacking barbels, which distinguishes it from many other cyprinids.
Lateral Line
Complete lateral line with 50-60 scales, often with a dark stripe running along it.
Fin Ray Count
Dorsal fin with 3 unbranched and 8-9 branched rays; anal fin with 3 unbranched and 8-10 branched rays. These counts can be crucial for species differentiation.
Coloration
Dark olive-green to brownish back, silvery flanks, and a whitish belly. A dark lateral stripe is often present.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderate depths (0.5-3 meters), often near the bottom or in mid-water.
- Ambiente
- Prefers clear, cool, well-oxygenated running waters such as streams, rivers, and occasionally lakes with good inflow. It is often found in areas with gravel or stony substrates and moderate to strong currents, seeking shelter among rocks, submerged vegetation, or undercut banks.
- Areale geografico
- Endemic to the Italian Peninsula, including parts of Switzerland (Ticino Canton) and Slovenia (Isonzo basin). Its distribution is primarily within the Po River basin and other Adriatic and Tyrrhenian drainages of Italy.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: peaceful
- Dieta: omnivore
- Dimensione minima della vasca: 150 liters (40 gallons)
- Temperatura: 10-20°C (50-68°F)
- Livello di pH: 6.5-7.5
- Durezza: 5-15 dGH
- Compatibilità: Compatible with other peaceful, coldwater fish of similar size, such as other native cyprinids or loaches. Avoid highly aggressive or very small, delicate species.
- Requisiti speciali: Requires well-oxygenated water with good flow. A planted tank with hiding spots and a substrate of fine gravel or sand is ideal. Sensitive to poor water quality, so regular water changes are essential. Can be shy and benefits from being kept in groups of 6 or more.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns primarily in spring (March-May) when water temperatures rise. Activity levels are generally higher during warmer months and lower in winter.
- Prezzo di mercato: Not typically sold commercially for consumption; occasionally available for aquarists at specialized dealers.
- Importanza commerciale: low
- Sapore: Mild, slightly earthy
- Consistenza: Fine, flaky
- Metodi di cottura: Pan-fried, Grilled, Baked
- Valore nutrizionale: Lean protein source, low in fat.
Fatti chiave
Endemic to Italyinteresting
The Vairone (Telestes muticellus) is primarily found in the Italian Peninsula, making it a significant part of Italy's freshwater ichthyofauna.
Habitat Indicatorbehavior
Its presence often indicates good water quality and well-oxygenated conditions, as it is sensitive to pollution and habitat degradation.
Dietary Generalistbehavior
As an omnivore, it feeds on a wide range of small invertebrates, algae, and detritus, contributing to nutrient cycling in its ecosystem.
Taxonomic Revisionsevolution
Historically, Telestes muticellus was often confused with or considered a subspecies of Telestes souffia, but molecular studies have confirmed its distinct species status.
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 to minimize stress to the fish. Handle gently with wet hands to protect their slime coat. They are not aggressive and do not possess venomous spines.
Specie simili
Chub
Squalius cephalus
Chub has a larger, more robust body, a larger terminal mouth, and typically larger scales (44-46 in lateral line). It also lacks the distinct dark lateral stripe often seen in Vairone.
Minnow
Phoxinus phoxinus
Minnows are generally smaller, have a more rounded snout, and a shorter, incomplete lateral line (though some populations may have a complete lateral line). Their coloration can be similar, but the Vairone's body shape is more elongated and less stout.
Telestes souffia (Souffia)
Telestes souffia
Telestes souffia has a more widespread distribution in Central and Western Europe. Morphologically, it can be very similar, but T. muticellus typically has a slightly higher number of lateral line scales (50-60 vs. 48-56 in T. souffia) and subtle differences in fin ray counts and body proportions. Genetic analysis is often required for definitive identification in areas of potential overlap or historical confusion.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Cypriniformes
- Famiglia
- Cyprinidae
- Genere
- Telestes
- Specie
- Telestes muticellus
Esplora Vairone
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