Redear Sunfish

lepomis microlophus

The Redear Sunfish, affectionately known by anglers as the 'shellcracker,' is a vibrant and robust freshwater fish native to the southeastern United States. Renowned for its unique diet and strong fighting ability on light tackle, this species has become a beloved target for sport fishers. Unlike many of its sunfish relatives that dart around the upper water column feeding on floating insects, the redear prefers to stealthily patrol the bottom in search of hard-shelled prey. What truly sets this fish apart is its specialized anatomy—a set of powerful, flat teeth located in its throat that allows it to effortlessly crush snail shells. This unique ecological niche makes the Redear Sunfish not only an interesting biological specimen but also a highly valuable natural pest controller in many aquatic environments, helping to keep snail populations in check and reducing the spread of certain aquatic parasites.

生息地: Found primarily in warm, sluggish waters of lakes, ponds, and slow-moving rivers, preferring areas with abundant aquatic vegetation, submerged stumps, and a muddy or sandy bottom.

外見

The Redear Sunfish boasts a deep, laterally compressed body typical of sunfishes, featuring an olive-green to bronze back that transitions into paler, yellow-green sides adorned with darker, mottled spots. Its most defining field mark is the opercular flap (the 'ear'), which is black and famously edged with a bright cherry-red or vivid orange crescent in adult males, and a lighter orange in females. The breast is often a bright yellow or yellowish-orange, while the dorsal fin is continuous, containing both spiny and soft rays. Compared to the closely related bluegill, it generally lacks vertical barring and has a slightly more elongated, pointed snout suited for bottom-feeding.

界Animalia門Chordata綱Actinopterygii目Centrarchiformes科Centrarchidae属Lepomis

Redear Sunfish

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

Anglers commonly refer to the Redear Sunfish as the 'shellcracker' because, in quiet waters, one can sometimes hear the fish actually cracking snail shells underwater when feeding.

The red or orange edge on the gill cover that gives the 'redear' its name is noticeably brighter and more vivid in males, especially during the breeding season.

They are frequently introduced into private ponds and lakes not just for fishing, but specifically to break the lifecycle of the 'yellow grub,' a fish parasite that relies on snails as an intermediate host.

Unlike many other sunfishes that eagerly strike surface lures, Redears rarely feed at the top of the water column, strongly preferring to hunt along the bottom.

特殊能力

Possesses a specialized set of flat, molar-like teeth in its throat designed specifically to crack open the tough shells of snails and small clams.

By heavily consuming aquatic snails, which act as intermediate hosts for various fish and bird parasites, they naturally regulate and break the lifecycle of aquatic diseases.

Males sweep out saucer-shaped depressions in the substrate to create nests, clustering them closely together in large colonies to cooperatively defend their eggs from predators.

サイズと詳細

長さ: 20-30 cm
体重: 0.2-1.5 kg
寿命: 5-8 年
一度の産卵数: 10000-60000
抱卵期間: 2-4 日

食性と食事

A specialized benthic predator that feeds almost exclusively on hard-shelled invertebrates and bottom-dwelling aquatic insects.

年齢による違い: Juveniles feed heavily on microcrustaceans and soft-bodied insects, transitioning almost entirely to hard-shelled prey as their pharyngeal jaws develop.

主な食物

Aquatic snails
Small clams
Midge larvae
Amphipods
Dragonfly nymphs

採餌方法

Foraging

生態系とのつながり

eaten by

Largemouth Bass

Micropterus salmoides

Largemouth Bass are a primary apex predator in their shared habitats, heavily preying upon juvenile Redear Sunfish.

hunts

Tadpole Snail

Physella gyrina

Redear Sunfish actively hunt and consume Tadpole Snails, keeping their populations in check.

competitor

Bluegill

Lepomis macrochirus

Bluegills share the same habitats and spawning grounds, often competing for nesting sites and occasionally hybridizing.

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

Redear Sunfishを見分けるには？

Redear Sunfish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。

Redear Sunfishの長さは何ですか？

20-30 cm

Redear Sunfishの体重は何ですか？

0.2-1.5 kg

Redear Sunfishの寿命は何ですか？

5-8 年

Redear Sunfishは何を食べますか？

A specialized benthic predator that feeds almost exclusively on hard-shelled invertebrates and bottom-dwelling aquatic insects.

Redear Sunfishは通常どこに生息していますか？

Found primarily in warm, sluggish waters of lakes, ponds, and slow-moving rivers, preferring areas with abundant aquatic vegetation, submerged stumps, and a muddy or sandy bottom.

Redear Sunfishはどのように狩りをしますか？

Foraging

Redear Sunfishの一度の産卵数は何ですか？

10000-60000