Plains Topminnow
探検魚類
Plains Topminnow
fundulus sciadicus
The Plains Topminnow (Fundulus sciadicus) is a small, resilient freshwater fish native to the clear, slow-moving streams and backwaters of the American Great Plains. Often found hovering motionless just below the water's surface, these fish are vital components of their localized aquatic ecosystems. They are known for their strong preference for heavily vegetated, spring-fed pools where they skillfully hunt for aquatic invertebrates and surface-trapped insects. What makes the Plains Topminnow particularly interesting is its understated beauty and ecological utility. While they may appear plain at first glance, breeding males undergo a stunning transformation, developing golden-bronze bodies with vivid reddish-orange fins to attract mates. As voracious predators of mosquito larvae, they serve as excellent natural pest controllers for their habitats. Unfortunately, their populations are becoming increasingly fragmented and threatened in some states due to habitat loss and the introduction of competitive invasive species.
生息地: Found in clear, slow-moving pools, spring runs, and heavily vegetated backwaters of small streams across the Great Plains.
外見
The Plains Topminnow is a small, relatively stout fish with an olive-brown to greenish back that fades into a silvery-white belly. Unlike many other topminnows, its sides are completely unmarked, lacking any prominent vertical bars or horizontal stripes. It features a noticeably flattened head and a superior (upturned) mouth perfectly adapted for surface feeding. During the breeding season, males display a striking golden-bronze sheen along their bodies and bright reddish-orange coloration on their dorsal, anal, and caudal fins.
界Animalia門Chordata綱Actinopterygii目Cyprinodontiformes科Fundulidae属Fundulus
カテゴリ
魚類レア度
Common
危険度
1/5 · 非常に低い
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おもしろい事実
During the breeding season, males perform specialized courtship dances to coax females into laying eggs on submerged aquatic plants.
They act as an unsung ecological hero of the Great Plains by eating thousands of mosquito larvae, naturally preventing localized mosquito outbreaks.
They get the name 'topminnow' from their habit of hovering right at the top of the water column to diligently search for food.
Unlike many closely related fish in the Fundulidae family, the Plains Topminnow notably lacks any dark stripes or bars on its sides.
特殊能力
能力
Surface Foraging
Features a specialized upward-facing mouth and flat head that allows it to efficiently capture terrestrial insects trapped in the surface tension.
能力
Low-Oxygen Resilience
Capable of surviving in stagnant, shallow pools by skimming and breathing the thin, oxygen-rich layer of water right at the surface.
能力
Mosquito Control
Highly effective at hunting and consuming mosquito larvae, functioning as a natural biological control in standing water ecosystems.
サイズと詳細
- 長さ
- 4-7 cm
- 体重
- 0.001-0.004 kg
- 寿命
- 2-3 年
- 一度の産卵数
- 50-200
- 抱卵期間
- 7-14 日
食性と食事
The Plains Topminnow feeds predominantly on aquatic invertebrates, mosquito larvae, and small terrestrial insects trapped on the water's surface.
年齢による違い: Fry consume microscopic zooplankton and rotifers before graduating to larger aquatic insects as they mature.
主な食物
- Mosquito larvae
- Midges
- Ostracods
- Terrestrial insects
- Algae
採餌方法
- Foraging
生態系とのつながり
competitor
Western Mosquitofish
Gambusia affinis
Competes for limited food and habitat with aggressively introduced species.
preys on
Common House Mosquito
Culex pipiens
Preys heavily on their aquatic larvae before they can mature into flying adults.
eaten by
Green Sunfish
Lepomis cyanellus
Consumed by larger predatory freshwater fish that share their habitat.
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
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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
Plains Topminnowを見分けるには？
Plains Topminnow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。
Plains Topminnowの長さは何ですか？
4-7 cm
Plains Topminnowの体重は何ですか？
0.001-0.004 kg
Plains Topminnowの寿命は何ですか？
2-3 年
Plains Topminnowは何を食べますか？
The Plains Topminnow feeds predominantly on aquatic invertebrates, mosquito larvae, and small terrestrial insects trapped on the water's surface.
Plains Topminnowは通常どこに生息していますか？
Found in clear, slow-moving pools, spring runs, and heavily vegetated backwaters of small streams across the Great Plains.
Plains Topminnowはどのように狩りをしますか？
Foraging
Plains Topminnowの一度の産卵数は何ですか？
50-200
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