Bluntnose Minnow

pimephales notatus

The Bluntnose Minnow (Pimephales notatus) is one of the most abundant and ecologically vital freshwater fish species in North America. Often overlooked due to its small size and unassuming appearance, this hardy minnow plays a key role in aquatic ecosystems as a primary food source for many popular sport fish. Known for its adaptability, it thrives in a wide range of freshwater environments, from clear, fast-flowing gravel streams to turbid lakes and reservoirs. During the breeding season, males undergo a dramatic transformation, developing dark pigmentation and specialized horn-like tubercles on their snouts, which they use to defend nesting sites under stones or debris. They are incredibly resilient, tolerant of various water qualities, and have a unique social structure that makes them a fascinating subject for freshwater observers and biologists alike.

生息地: Found in a wide variety of freshwater environments, including gravel-bottomed creeks, small streams, rocky lakes, and slow-moving rivers across eastern and central North America.

外見

The Bluntnose Minnow is a small, slender fish, typically ranging from 5 to 11 centimeters in length. It is easily identified by its notably blunt, rounded snout and a slightly compressed, cylindrical body with a flat back. Its coloration is generally olivaceous to pale silver-green on the back, fading to a silvery-white belly. A distinct, dark lateral stripe runs from the tip of the snout, through the eye, all the way to the base of the tail fin, where it terminates in a prominent dark spot. Additionally, the scales on its back are small and crowded, giving it a somewhat cross-hatched or dark-edged appearance.

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

Bluntnose Minnow

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

During breeding season, males develop a dark 'breeding mask' and three rows of horn-like tubercles on their snouts to fight rivals and scrape algae off nesting surfaces.

Male Bluntnose Minnows are dedicated fathers; they guard the eggs under stones, aggressively driving away predators and fanning the eggs with their fins to keep them oxygenated and clean.

They possess an extraordinary sense of smell and rely on chemical alarm signals released from damaged skin cells to warn their school of nearby predators.

特殊能力

When injured, the Bluntnose Minnow releases a chemical alarm signal called 'Schreckstoff' from its skin to warn nearby schoolmates of predators.

During breeding, males grow tough, horn-like snout tubercles used to aggressively defend nesting cavities and clean potential egg sites.

Unlike many sensitive minnows, this species has high tolerance for muddy water, allowing it to thrive and forage in degraded aquatic habitats.

サイズと詳細

長さ: 5+ cm
体重: 0.002+ kg
寿命: 2+ 年
Top Speed: 8 km/h
一度の産卵数: 100+
抱卵期間: 6+ 日

食性と食事

They are opportunistic bottom-feeders that consume a mixture of organic detritus, small aquatic insects, microcrustaceans, and algae.

主な食物

Algae
Aquatic insect larvae
Organic detritus
Daphnia
Rotifers

採餌方法

Foraging

生態系とのつながり

eaten by

Smallmouth Bass

Micropterus dolomieu

The Bluntnose Minnow serves as a critical food source for adult Smallmouth Bass in rocky river habitats.

eaten by

Largemouth Bass

Micropterus salmoides

Often hunted by Largemouth Bass in slow-moving waters and shallow lake margins.

hunts

Midges

Chironomidae

Bluntnose Minnows feed heavily on midge larvae found in the muddy substrate of streams and rivers.

特徴

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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

Bluntnose Minnowを見分けるには？

Bluntnose Minnow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。

Bluntnose Minnowの長さは何ですか？

5+ cm

Bluntnose Minnowの体重は何ですか？

0.002+ kg

Bluntnose Minnowの寿命は何ですか？

2+ 年

Bluntnose Minnowのtop Speedは何ですか？

8 km/h

Bluntnose Minnowは何を食べますか？

They are opportunistic bottom-feeders that consume a mixture of organic detritus, small aquatic insects, microcrustaceans, and algae.

Bluntnose Minnowは通常どこに生息していますか？

Found in a wide variety of freshwater environments, including gravel-bottomed creeks, small streams, rocky lakes, and slow-moving rivers across eastern and central North America.

Bluntnose Minnowはどのように狩りをしますか？

Foraging