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Alburnus arborella, commonly known as the Alborella, is a small, slender, and silvery freshwater fish belonging to the family Cyprinidae. It is characterized by its streamlined body, adapted for life in flowing waters, and its distinctive silvery flanks. This species is often found in shoals, exhibiting schooling behavior, and is an important component of the food web in its native habitats.
Caratteristiche fisiche
- Forma del corpo
- elongated
- Colorazione
- Dorsal side is typically greenish-brown to olive, fading to brilliant silvery flanks and a white belly. Fins are generally translucent or slightly yellowish. A distinct silvery lateral stripe is often present.
- Tipo di squame
- cycloid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Slender, compressed body, Large, easily shed scales, Terminal mouth, slightly upturned, Prominent lateral line
- Pinna dorsale
- Short, with 2-3 unbranched and 7-9 branched rays, positioned slightly behind the pelvic fins.
- Pinna caudale
- Deeply forked, with pointed lobes.
- Pinna pettorale
- Relatively long, reaching or nearly reaching the base of the pelvic fins.
- Pinne distintive
- All fins are generally translucent, sometimes with a yellowish tint, lacking any prominent spots or markings.
Consigli per l'identificazione
Body Shape and Coloration
Look for a slender, silvery body with a greenish-brown back. The lateral line is usually very distinct and straight.
Mouth Position
The mouth is terminal and slightly upturned, indicating its surface-feeding habits.
Fin Placement
The dorsal fin is positioned slightly behind the pelvic fins, a key characteristic for distinguishing it from some similar species.
Scale Size
Alborella have relatively large, easily detachable scales, which can be a useful field identification feature.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderate depths, often near the surface.
- Ambiente
- Prefers clear, well-oxygenated lakes, rivers, and streams with moderate to slow currents. Often found in open water but also near submerged vegetation or structures. Tolerant of a range of substrates, from gravel to mud.
- Areale geografico
- Native to the Balkan Peninsula, particularly in the Adriatic basin, including countries like Italy, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Albania, and Greece. Its distribution is primarily restricted to the western Balkans and parts of Italy.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: peaceful
- Dieta: omnivore
- Dimensione minima della vasca: 75 gallons (for a small shoal)
- Temperatura: 18-24°C (64-75°F)
- Livello di pH: 6.5-7.5
- Durezza: 5-15 dGH
- Compatibilità: Compatible with other peaceful, similarly sized temperate fish. Best kept in a species-specific tank or with other cyprinids.
- Requisiti speciali: Requires well-oxygenated water with good filtration and moderate flow. A planted tank with open swimming areas is ideal. Shoaling species, so keep in groups of 6 or more.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns primarily from April to June, with peak activity in late spring. More active and visible during warmer months.
- Prezzo di mercato: Low
- Importanza commerciale: low
- Sapore: Mild, slightly sweet
- Consistenza: Delicate, flaky
- Metodi di cottura: Frying, Pickling, Grilling
- Valore nutrizionale: Good source of protein and omega-3 fatty acids, though typically consumed in smaller quantities due to size.
Fatti chiave
Shoaling Behaviorbehavior
Alborella are highly social fish, forming large, dense shoals, especially in open water. This behavior provides protection against predators and aids in foraging efficiency.
Surface Feederbehavior
Their slightly upturned mouth is perfectly adapted for feeding on insects that fall onto the water surface, as well as zooplankton in the water column.
Ecological Roleinteresting
As a small, abundant species, Alborella serve as a crucial food source for a variety of piscivorous fish (e.g., pike, perch) and birds (e.g., kingfishers, herons) in their ecosystem.
Taxonomic Complexityevolution
The genus Alburnus is known for its complex taxonomy, with many species exhibiting similar morphologies, leading to historical confusion and ongoing research into their phylogenetic relationships.
Short Lifespanbehavior
Alborella typically have a relatively short lifespan, usually reaching 3-5 years in the wild, with rapid growth in their early years.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: No specific handling precautions are required. They are small and harmless. Handle gently if caught for release to minimize stress and scale loss.
Specie simili
Common Bleak
Alburnus alburnus
A. arborella generally has a more slender body, a slightly more upturned mouth, and often a more pronounced silvery lateral stripe. The number of lateral line scales can also differ, though this requires careful counting (A. arborella typically has 40-48 scales, A. alburnus 44-53).
Italian Bleak
Alburnus albidus
A. albidus is generally more robust and has a deeper body than A. arborella. Genetic analysis is often required for definitive differentiation, as morphological differences can be subtle and overlap in some regions.
Danube Bleak
Alburnus chalcoides
A. chalcoides is typically larger and has a more robust body. Its distribution is also distinct, primarily in the Danube basin, whereas A. arborella is restricted to the Adriatic basin.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Cypriniformes
- Famiglia
- Cyprinidae
- Genere
- Alburnus
- Specie
- Alburnus arborella
Esplora Alborella
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