Hai una foto? Identifica i pesci all'istante con l'app Fishby.
Apri l'appDescrizione
Scardinius erythrophthalmus, commonly known as the Rudd, is a freshwater fish belonging to the family Cyprinidae. It is characterized by its deep, laterally compressed body, distinctive red fins, and upward-pointing mouth. It is a schooling fish, often found in clear, well-vegetated waters, and is known for its surface-feeding habits.
Caratteristiche fisiche
- Forma del corpo
- compressed
- Colorazione
- The back is typically dark green to brownish-green, fading to silvery flanks and a white belly. The most striking feature is the bright red to orange coloration of the pectoral, pelvic, anal, and caudal fins. The iris of the eye is often golden-yellow with a reddish spot.
- Tipo di squame
- cycloid
- Posizione della bocca
- superior
- Caratteristiche distintive
- Bright red fins (especially pelvic, anal, and caudal), Upward-pointing mouth (superior mouth), Deep, laterally compressed body, Large, golden-yellow eyes with a reddish spot, Lateral line scales typically 37-42
- Pinna dorsale
- Short, located relatively far back on the body, with 8-9 branched rays. Its origin is typically behind the origin of the pelvic fins.
- Pinna caudale
- Deeply forked, with prominent red coloration.
- Pinna pettorale
- Relatively short, with 15-17 rays, often bright red.
- Pinne distintive
- All fins, particularly the paired fins and anal fin, are typically bright red or orange, a key distinguishing feature.
Consigli per l'identificazione
Mouth Position
The Rudd has a distinctly superior (upward-pointing) mouth, adapted for surface feeding. This differentiates it from the Roach (Rutilus rutilus) which has a terminal mouth.
Fin Coloration
The bright red or orange coloration of all fins, especially the pelvic, anal, and caudal fins, is a primary identifier. Roach typically have red fins, but they are usually duller and the dorsal and caudal fins are often greyish.
Dorsal Fin Origin
The origin of the dorsal fin in Rudd is typically behind the origin of the pelvic fins. In Roach, the dorsal fin origin is usually directly above or slightly in front of the pelvic fin origin.
Body Shape
Rudd have a deeper, more compressed body compared to the more slender Roach.
Eye Color
The eye of the Rudd is typically golden-yellow with a reddish spot, whereas the Roach usually has a distinct red iris.
Habitat
- Tipo di acqua
- freshwater
- Profondità
- Typically found in shallow to moderately deep waters, usually less than 5 meters (16 feet).
- Ambiente
- Prefers clear, slow-moving or still waters of lakes, ponds, canals, and the lower reaches of rivers. It is strongly associated with dense aquatic vegetation, which provides cover and food. Tolerates a wide range of water conditions but thrives in well-oxygenated environments.
- Areale geografico
- Native to most of Europe, excluding Scandinavia north of 61°N, the Iberian Peninsula, and southern Italy. Its range extends eastward into parts of Asia, including Anatolia and the Caspian Sea basin. It has been widely introduced to other parts of the world, including North America, Ireland, and New Zealand, where it can become an invasive species.
Informazioni sull'acquario
- Livello di cura: intermediate
- Temperamento: peaceful
- Dieta: omnivore
- Dimensione minima della vasca: 200 gallons (750 liters) for a small school
- Temperatura: 10-24°C (50-75°F)
- Livello di pH: 6.5-8.0
- Durezza: 5-20 dGH
- Compatibilità: Compatible with other peaceful, coldwater fish of similar size. Avoid very small fish that could be seen as prey or overly aggressive species.
- Requisiti speciali: Requires a well-planted tank with open swimming areas. Good filtration and oxygenation are crucial. Prefers clear water with a gentle current. Can be kept in outdoor ponds in suitable climates.
Informazioni in natura
- Stato di conservazione: least concern
- Stagionalità: Spawns from April to July, with peak activity in May and June, depending on water temperature. More active and feeding heavily during warmer months.
- Prezzo di mercato: Low
- Importanza commerciale: low
- Sapore: Mild, somewhat earthy
- Consistenza: Flaky, bony
- Metodi di cottura: Frying, Baking, Smoking
- Valore nutrizionale: Good source of protein, low in fat. Contains Omega-3 fatty acids.
Fatti chiave
Surface Feederbehavior
The Rudd's superior mouth is perfectly adapted for feeding on insects that fall onto the water surface or emergent vegetation, making it a popular target for fly anglers.
Hybridizationinteresting
Rudd are known to readily hybridize with other cyprinids, most notably the Roach (Rutilus rutilus), producing fertile offspring that can make identification challenging.
Invasive Speciesamazing
Due to its adaptability and prolific breeding, the Rudd has become an invasive species in several regions outside its native range, particularly in North America and New Zealand, where it can outcompete native fish for resources.
Vegetation Loverbehavior
Rudd are almost always found in close association with dense aquatic vegetation, which provides both shelter from predators and a rich source of food, including plant matter, insects, and small invertebrates.
Informazioni di sicurezza
Sicuro- Livello di sicurezza: safe
- Velenoso: No
- Commestibilità: edible
- Note sul maneggio: Rudd are harmless to handle. Care should be taken to minimize stress if caught for release. Handle with wet hands to protect their slime coat.
Specie simili
Roach
Rutilus rutilus
Roach have a terminal mouth (not upward-pointing), the dorsal fin origin is typically above or slightly anterior to the pelvic fin origin, and their fins are generally duller red or greyish, not as vibrant as the Rudd's. The eye of the Roach is typically red, while the Rudd's is golden with a red spot.
Bream
Abramis brama
Bream have a much deeper, more compressed body, a protractile, downward-pointing mouth, and generally duller, greyish fins. They also have a longer anal fin.
Ide/Orfe
Leuciscus idus
Ide are more elongated and less compressed than Rudd, with a terminal mouth. Their fins are typically yellowish-orange to reddish, but not as intensely red as the Rudd's, and their scales are smaller.
Classificazione scientifica
- Regno
- Animalia
- Phylum
- Chordata
- Classe
- Actinopterygii
- Ordine
- Cypriniformes
- Famiglia
- Cyprinidae
- Genere
- Scardinius
- Specie
- Scardinius erythrophthalmus
Esplora Rudd
Identifica pesci ovunque
Gratis su iOS, Android e Web. Identificazione tramite foto, dettagli completi sulle specie e molto altro.