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Apri l'appDescrizione
Esox lucius, commonly known as the Northern Pike, is a predatory freshwater fish native to North America, Europe, and northern Asia. It is characterized by its elongated, torpedo-shaped body, duck-bill-like snout, and sharp, backward-pointing teeth. Pikes are ambush predators, known for their aggressive feeding habits and significant size, making them a popular sport fish.
Caratteristiche fisiche
- Forma del corpo
- torpedo
- Colorazione
- Typically olive green to dark green on the back, fading to yellowish-white on the belly. Sides are marked with irregular rows of light, bean-shaped spots or bars. Fins are often reddish or orange with dark blotches.
- Tipo di squame
- cycloid
- Posizione della bocca
- superior
- Caratteristiche distintive
- Elongated, cylindrical body, Large, duck-bill-shaped snout, Large mouth extending past the eye, Numerous sharp, backward-pointing teeth on jaws, palate, and tongue, Single dorsal fin positioned far back on the body, directly above the anal fin, Lateral line usually complete, with 105-148 scales
- Pinna dorsale
- Single, soft-rayed, located posteriorly, typically with 17-25 rays.
- Pinna caudale
- Large, deeply forked, with rounded lobes.
- Pinna pettorale
- Relatively small, positioned low on the body, with 13-16 rays.
- Pinne distintive
- Dorsal and anal fins are set far back on the body, nearly opposite each other, providing powerful thrust for ambush attacks.
Consigli per l'identificazione
Cheek and Operculum Scaling
Northern Pike have scales covering the entire cheek, but only the upper half of the operculum (gill cover) is scaled. This is a key differentiator from other Esox species.
Body Markings
Characterized by light, bean-shaped spots or bars on a darker background, as opposed to the dark spots on a lighter background seen in Muskellunge.
Pores on Underside of Jaw
Typically has 5 pores on each side of the underside of the lower jaw (mandibular pores), though sometimes 4 or 6 can occur. This count is important for distinguishing from Muskellunge (6-9 pores).
Dorsal Fin Rays
Count of dorsal fin rays (17-25) can help differentiate from other pike species, though this requires careful examination.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderately deep waters (1-10 meters), but can inhabit deeper areas in larger lakes.
- Ambiente
- Prefers clear, cool, vegetated waters of lakes, slow-moving rivers, and reservoirs. Often found in areas with submerged aquatic vegetation, fallen trees, or other structures that provide cover for ambush predation. Tolerant of a wide range of water conditions but thrives in well-oxygenated environments.
- Areale geografico
- Holarctic distribution, encompassing northern North America (Alaska, Canada, northern and central United States), Europe (from Ireland to Russia), and northern Asia (Siberia).
Informazioni sull'acquario
- Livello di cura: expert
- Temperamento: aggressive
- Dieta: carnivore
- Dimensione minima della vasca: Not suitable for typical aquariums due to size and predatory nature; requires very large, specialized facilities (e.g., public aquariums or research institutions) with tanks exceeding several thousand gallons.
- Temperatura: 10-22°C (50-72°F)
- Livello di pH: 6.5-8.0
- Durezza: 5-20 dGH
- Compatibilità: Not compatible with other fish species, including other pike, due to extreme predatory behavior and cannibalism. Must be housed alone.
- Requisiti speciali: Requires immense tank size, powerful filtration, excellent aeration, and a constant supply of live or fresh dead fish as food. Not recommended for private aquarists.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns in early spring (March-May) shortly after ice-out. Feeding activity is high in spring and fall, and can be reduced in mid-summer and mid-winter.
- Prezzo di mercato: Varies regionally, generally moderate for food fish, high for sport fishing tourism.
- Importanza commerciale: medium
- Sapore: Mild, flaky white meat, often described as having an earthy flavor.
- Consistenza: Firm, lean, and somewhat bony, especially due to the 'Y-bones'.
- Metodi di cottura: Baking, Frying, Grilling, Poaching, Smoking, Making fish cakes or gefilte fish to mitigate bones
- Valore nutrizionale: Good source of protein, omega-3 fatty acids, and various vitamins and minerals. Low in fat.
Fatti chiave
Ambush Predatorbehavior
Northern Pike are classic ambush predators, lying motionless in vegetation or structure, then launching a sudden, explosive attack on unsuspecting prey.
Cannibalistic Tendenciesbehavior
Larger Northern Pike are known to prey on smaller pike, especially when food resources are scarce, demonstrating significant cannibalistic behavior.
Longevityrecord
Northern Pike can live for a considerable time, with individuals recorded living up to 25-30 years in optimal conditions.
Y-Bonesinteresting
Pike are notorious for their 'Y-bones' (intermuscular bones), which can make filleting challenging for inexperienced preparers. Specialized filleting techniques are often employed to remove them.
Ecological Rolebehavior
As apex predators in many freshwater ecosystems, Northern Pike play a crucial role in regulating populations of smaller fish and maintaining ecosystem balance.
Informazioni di sicurezza
Maneggiare con cura- Livello di sicurezza: caution
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Northern Pike possess numerous extremely sharp teeth on their jaws, palate, and tongue. Extreme caution is required when handling to avoid severe lacerations. Use a jaw spreader and long-nosed pliers for hook removal. Avoid placing fingers near the mouth. A firm grip behind the head and supporting the belly is recommended for larger fish. Their gill rakers are also sharp and can cause injury.
Specie simili
Muskellunge
Esox masquinongy
Muskellunge have scales only on the upper half of both the cheek and operculum (Northern Pike have a fully scaled cheek). Muskellunge typically have dark spots or bars on a lighter background, while Northern Pike have light spots on a darker background. Muskellunge usually have 6-9 pores on each side of the underside of the lower jaw, compared to 5 (rarely 4 or 6) in Northern Pike.
Chain Pickerel
Esox niger
Chain Pickerel are generally smaller, have a distinct chain-like pattern on their sides, and both their cheeks and opercula are fully scaled. They also have a prominent dark bar beneath the eye.
Amur Pike
Esox reichertii
Amur Pike are found only in eastern Asia and have distinct dark spots on a lighter background, similar to a Muskellunge, but their scaling patterns on the cheek and operculum differ from both Northern Pike and Muskellunge.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Esociformes
- Famiglia
- Esocidae
- Genere
- Esox
- Specie
- Esox lucius
Esplora Northern Pike
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