EntdeckenFische

Roundtail Chub

gila robusta

The Roundtail Chub (Gila robusta) is a large, minnow-like freshwater fish native to the sprawling, unpredictable waters of the Colorado River Basin. Despite being a member of the minnow family, they can grow to impressive sizes, acting as a crucial intermediate predator in their native desert river ecosystems. Known for their resilience, these fish have evolved to thrive in environments characterized by extreme fluctuations in water flow, temperature, and turbidity. Historically referred to as the 'Colorado River Trout' by early pioneers due to their sporty fight and size, the Roundtail Chub remains an iconic symbol of the American Southwest's aquatic heritage, although they now face significant challenges from habitat alteration and invasive species.

Lebensraum: Found in warm, rocky rivers and streams of the Colorado River Basin, typically preferring deep, slow-moving pools and eddies near boulders or overhanging vegetation.

Aussehen

Roundtail Chubs feature a streamlined, thick-bodied profile with a slender caudal peduncle (the area just before the tail fin) and a deeply forked tail, built for navigating strong currents. Their coloration is typically olive-green to grey on the back, fading to silvery sides and a white belly. During the spawning season, adult males develop striking orange or red patches on their lower fins, cheeks, and belly. They possess a relatively large, terminal mouth without barbels and have small, finely textured scales.

ReichAnimaliaStammChordataKlasseActinopterygiiOrdnungCypriniformesFamilieLeuciscidaeGattungGila

Roundtail Chub

Kategorie

Fische

Seltenheit

Common

Gefahr

1/5 · Sehr gering

Snaps

Mach den ersten Snap!

Interessante Fakten

Early pioneers of the American Southwest often caught Roundtail Chubs for food, mistakenly calling them 'Colorado River Trout' because of their aggressive strike and fighting ability.

The Roundtail Chub can hybridize with closely related species like the Humpback Chub and Bonytail Chub, sometimes complicating conservation efforts.

They are broadcast spawners, meaning females release thousands of eggs over gravel beds into the current, leaving them completely unguarded to develop on their own.

Besondere Fähigkeiten

Highly adapted to the extreme flood-and-drought cycles of desert rivers, able to find refuge during torrential floods and survive in isolated pools during severe droughts.

Possesses a deeply forked tail and streamlined body that allows for rapid bursts of speed to navigate turbulent rapids or evade predatory fish.

Able to seamlessly shift its diet based on seasonal availability, switching from aquatic insects to algae or small fish as river conditions change.

Maße und Details

Länge: 25-45 cm
Gewicht: 0.5-1.5 kg
Lebenserwartung: 7-10 Jahre
Top Speed: 20 km/h
Gelegegröße: 5000-40000
Brutzeit: 4-7 Tage
Zugstrecke: 30 km

Ernährung und Fütterung

An opportunistic feeder that consumes a wide variety of aquatic and terrestrial prey alongside plant matter.

Altersunterschiede: Juveniles feed primarily on small aquatic insects and algae, while adults incorporate more small fish and larger invertebrates into their diet.

Hauptnahrung

Aquatic insects
Small fish
Crustaceans
Algae
Terrestrial insects

Nahrungssuche

Foraging

Ökologische Zusammenhänge

eaten by

Colorado Pikeminnow

Ptychocheilus lucius

Preyed upon by the native apex predator of the basin.

competitor

Brown Trout

Salmo trutta

Competes with and is preyed upon by non-native introduced sport fish.

hunts

Mayflies

Ephemeroptera

Feeds heavily on aquatic larvae found in the river substrate.

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Sicherheit

Gefahr

1/5 · Sehr gering

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Häufig gestellte Fragen

Wie identifiziert man Roundtail Chub?

Der einfachste Weg, Roundtail Chub zu bestimmen, ist die Verwendung der Naturführer-App Snappit.

Was ist der/die/das länge von Roundtail Chub?

25-45 cm

Was ist der/die/das gewicht von Roundtail Chub?

0.5-1.5 kg

Was ist der/die/das lebenserwartung von Roundtail Chub?

7-10 Jahre

Was ist der/die/das top Speed von Roundtail Chub?

20 km/h

Was frisst Roundtail Chub?

An opportunistic feeder that consumes a wide variety of aquatic and terrestrial prey alongside plant matter.

Wo findet man Roundtail Chub normalerweise?

Found in warm, rocky rivers and streams of the Colorado River Basin, typically preferring deep, slow-moving pools and eddies near boulders or overhanging vegetation.

Wie jagt Roundtail Chub?

Foraging