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Apri l'appDescrizione
Perca fluviatilis, commonly known as the European Perch or Persico Reale, is a widespread freshwater fish species native to Europe and Asia. It is a popular sport fish and an important component of many aquatic ecosystems. Known for its distinctive appearance and predatory nature, it plays a significant role in controlling populations of smaller fish and invertebrates.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- Typically greenish-brown to olive on the back, fading to yellowish-white on the belly. Distinctive vertical dark bars (usually 5-9) on the flanks. Pectoral, pelvic, and anal fins are often reddish-orange, especially in breeding males.
- Tipo di squame
- ctenoid
- Posizione della bocca
- terminal
- Caratteristiche distintive
- Two distinct dorsal fins: the first spiny, the second soft-rayed., Rough, ctenoid scales., Large mouth with numerous small, sharp teeth., Prominent dark vertical bars on flanks., Reddish pelvic, anal, and caudal fins.
- Pinna dorsale
- Two dorsal fins: the first with 13-17 strong, sharp spines; the second with 1-3 spines and 13-16 soft rays. The two fins are typically separated or only narrowly joined.
- Pinna caudale
- Slightly forked caudal fin, often reddish.
- Pinna pettorale
- Paired, relatively small, and rounded.
- Pinne distintive
- Pelvic and anal fins are often bright reddish-orange, particularly in mature individuals.
Consigli per l'identificazione
Dorsal Fins
Look for two clearly separated dorsal fins; the first is spiny and the second is soft-rayed. This is a key differentiator from many other freshwater species.
Vertical Bars
The presence of 5-9 distinct dark vertical bars on the flanks is a very reliable identification feature.
Fin Coloration
The reddish-orange coloration of the pelvic, anal, and caudal fins is characteristic, especially in adults.
Body Shape
Its deep, compressed body and relatively large head are distinctive.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderate depths (1-10 meters), but can occur deeper in large lakes.
- Ambiente
- Lakes, slow-flowing rivers, canals, and ponds. Prefers clear, well-oxygenated water with submerged vegetation, snags, and rocky areas for cover and ambush points. Tolerant of a wide range of water conditions.
- Areale geografico
- Widespread across Europe (excluding the Iberian Peninsula and parts of southern Italy and Greece), and northern Asia, extending into Siberia. Introduced to various other regions, including Australia, New Zealand, and South Africa, where it can be invasive.
Informazioni sull'acquario
- Livello di cura: advanced
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: 200 gallons (for adults)
- Temperatura: 10-22°C (50-72°F)
- Livello di pH: 6.5-7.5
- Durezza: 5-15 dGH
- Compatibilità: Best kept alone or with very large, robust fish that cannot be swallowed. Highly predatory.
- Requisiti speciali: Requires a large tank with plenty of hiding spots (rocks, driftwood) and strong filtration. Live or frozen foods are essential. Not typically recommended for home aquaria due to size and predatory nature.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns in spring (March-July depending on latitude). Active year-round, with feeding intensity varying with water temperature.
- Prezzo di mercato: Varies by region and size, generally moderate.
- Importanza commerciale: medium
- Sapore: Mild, flaky, white flesh with a delicate flavor.
- Consistenza: Firm and tender.
- Metodi di cottura: Pan-fried, Baked, Grilled, Poached
- Valore nutrizionale: Good source of protein, low in fat, contains Omega-3 fatty acids.
Fatti chiave
Spawning Behaviorbehavior
European Perch lay their eggs in long, gelatinous ribbons, often draped over submerged vegetation, branches, or rocks. A single female can lay tens of thousands of eggs.
Cannibalismbehavior
Larger perch are known to prey on smaller perch, especially when food resources are scarce. This can lead to 'stunted' populations where many small perch exist due to intense intraspecific competition.
Growth Rateinteresting
Growth rates are highly variable depending on environmental conditions and food availability. In nutrient-rich waters, they can grow rapidly, while in poor conditions, they may remain small for many years.
Introduced Speciesinteresting
Perca fluviatilis has been widely introduced outside its native range, often with negative ecological impacts on native fish populations due to its predatory nature and competitive advantage.
Sensory Abilitiesbehavior
Perch have excellent vision, particularly in low light, which aids their predatory hunting. They also possess a well-developed lateral line system to detect vibrations in the water.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: The first dorsal fin contains sharp, stiff spines that can inflict painful punctures. Handle with care, avoiding direct contact with the spiny dorsal fin. Use a fish gripper or thick gloves if necessary. The operculum (gill cover) also has a sharp spine that can cut. While not venomous, punctures can become infected if not cleaned properly.
Specie simili
Walleye
Sander vitreus
Walleye have a more elongated body, larger eyes, and a distinct white tip on the lower lobe of the caudal fin. They lack the prominent vertical bars of the European Perch.
Zander
Sander lucioperca
Zander have a more elongated, pike-like body, smaller scales, and lack the distinct vertical bars. Their dorsal fins are typically closer together, and their eyes are more reflective.
Yellow Perch
Perca flavescens
Very similar in appearance and often considered a subspecies or sister species. Yellow Perch generally have a more yellowish overall coloration and typically 6-8 vertical bars. The most reliable distinction often requires genetic analysis or precise meristic counts, though their native ranges are largely allopatric (European Perch in Eurasia, Yellow Perch in North America).
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Perciformes
- Famiglia
- Percidae
- Genere
- Perca
- Specie
- Perca fluviatilis
Esplora European Perch
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