Common Rudd

scardinius erythrophthalmus

The Common Rudd, Scardinius erythrophthalmus, is a beautiful and adaptable freshwater fish belonging to the carp family. Known for its striking red fins and golden-bronze scales, it is a popular species among anglers and a common inhabitant of still and slow-moving waters across Europe and Asia. These fish typically form shoals, especially when young, providing both safety in numbers and efficiency in foraging. Their ability to thrive in a variety of aquatic environments, from clear lakes to weedy canals, highlights their resilience. Rudds are fascinating for their dietary flexibility and their distinctive upturned mouth, an adaptation perfectly suited for feeding on surface insects and aquatic vegetation.

生息地: Found in still or slow-flowing waters such as lakes, ponds, canals, and slow-moving rivers, preferring areas with abundant aquatic vegetation.

外見

The Common Rudd is easily identified by its deep, compressed body and brilliant red or orange fins, particularly noticeable on the pectoral, pelvic, and anal fins, with the caudal fin often being a dusky red. Its scales are large and golden-bronze to silvery, reflecting light beautifully. The head is relatively small, with a distinctly upturned mouth, indicating its preference for surface feeding. Adults typically range from 15 to 30 cm in length, though larger specimens can be found.

界Animalia門Chordata綱Actinopterygii目Cypriniformes科Leuciscidae属Scardinius

Common Rudd

カテゴリ

魚類

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

Despite being a small to medium-sized fish, they are a popular target for coarse anglers due to their striking appearance and willingness to take a variety of baits near the surface.

In some regions, the Common Rudd is considered an invasive species, particularly in North America and New Zealand, where it competes with native fish for resources and can alter aquatic ecosystems.

The Common Rudd is often mistakenly identified as the Common Roach due to their similar appearance, but the rudd's more upturned mouth and redder fins are key distinguishing features.

Their vibrant red fins develop more intensely in clear, healthy waters, making them a good indicator of water quality.

特殊能力

The Common Rudd possesses a uniquely upturned mouth, an adaptation perfectly suited for scooping insects and other food items from the water surface or just below it. This allows it to exploit a food source often unavailable to bottom-feeding fish.

This species can tolerate a wide range of water conditions, including low oxygen levels and slight brackishness. This adaptability allows them to colonize and thrive in diverse and sometimes less-than-ideal aquatic environments.

Rudds are known to readily hybridize with other cyprinid species, particularly the Common Bream (Abramis brama) and Common Roach (Rutilus rutilus). This ability can sometimes lead to challenges in species identification and ecological interactions.

サイズと詳細

長さ: 15-45 cm
体重: 0.1-2.5 kg
寿命: 5-10 年
Top Speed: 15 km/h
一度の産卵数: 5000-200000
抱卵期間: 3-7 日

食性と食事

The Common Rudd has a varied diet, consuming both plant matter and small aquatic invertebrates. They primarily feed near the surface and in the water column.

年齢による違い: Younger rudds primarily consume zooplankton and small invertebrates, while older and larger fish incorporate more aquatic vegetation and larger insect larvae into their diet.

主な食物

aquatic plants
insect larvae
zooplankton
small crustaceans
terrestrial insects

採餌方法

Foraging

生態系とのつながり

eaten by

Northern Pike

Esox lucius

A significant predator of Common Rudd, especially larger individuals.

competitor

Common Roach

Rutilus rutilus

Known to hybridize with Common Rudd, creating fertile offspring and sometimes causing identification confusion.

host plant

Water Lilies

Nymphaea alba

Provides habitat, shelter, and a primary food source for Common Rudd, especially larger fish.

eaten by

Kingfisher

Alcedo atthis

Juvenile Rudds are a food source for various fish-eating birds.

特徴

このオブジェクトにはまだ特徴バッジが割り当てられていません。

別名

まだ別名はありません。

コレクション

テーマが追加されると、このオブジェクトのコレクションがここに表示されます。

安全性

危険度

1/5 · 非常に低い

まだ特別な安全上の注意はありません。

よくある質問

Common Ruddを見分けるには？

Common Ruddを識別する最も簡単な方法は、Snappit自然識別アプリを使用することです。

Common Ruddの長さは何ですか？

15-45 cm

Common Ruddの体重は何ですか？

0.1-2.5 kg

Common Ruddの寿命は何ですか？

5-10 年

Common Ruddのtop Speedは何ですか？

15 km/h

Common Ruddは何を食べますか？

The Common Rudd has a varied diet, consuming both plant matter and small aquatic invertebrates. They primarily feed near the surface and in the water column.

Common Ruddは通常どこに生息していますか？

Found in still or slow-flowing waters such as lakes, ponds, canals, and slow-moving rivers, preferring areas with abundant aquatic vegetation.

Common Ruddはどのように狩りをしますか？

Foraging