Roundtail Chub
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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.
Hábitat: 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.
Aspecto
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.
ReinoAnimaliaFiloChordataClaseActinopterygiiOrdenCypriniformesFamiliaLeuciscidaeGéneroGila
Categoría
PecesRareza
Common
Peligro
1/5 · Muy bajo
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Datos interesantes
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.
Habilidades especiales
Habilidad
Flow Resilience
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.
Habilidad
Burst Swimming
Possesses a deeply forked tail and streamlined body that allows for rapid bursts of speed to navigate turbulent rapids or evade predatory fish.
Habilidad
Opportunistic Foraging
Able to seamlessly shift its diet based on seasonal availability, switching from aquatic insects to algae or small fish as river conditions change.
Medidas y detalles
- Longitud
- 25-45 cm
- Peso
- 0.5-1.5 kg
- Esperanza de vida
- 7-10 años
- Top Speed
- 20 km/h
- Tamaño de la puesta
- 5000-40000
- Incubación
- 4-7 días
- Distancia de migración
- 30 km
Dieta y alimentación
An opportunistic feeder that consumes a wide variety of aquatic and terrestrial prey alongside plant matter.
Diferencias por edad: Juveniles feed primarily on small aquatic insects and algae, while adults incorporate more small fish and larger invertebrates into their diet.
Alimentos principales
- Aquatic insects
- Small fish
- Crustaceans
- Algae
- Terrestrial insects
Método de búsqueda
- Foraging
Conexiones ecológicas
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.
Rasgos
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También conocido como
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Seguridad
Peligro
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Preguntas frecuentes
¿Cómo identificar a Roundtail Chub?
La forma más fácil de identificar a Roundtail Chub es usar la aplicación de identificación de naturaleza Snappit.
¿Cuál es el longitud de Roundtail Chub?
25-45 cm
¿Cuál es el peso de Roundtail Chub?
0.5-1.5 kg
¿Cuál es el esperanza de vida de Roundtail Chub?
7-10 años
¿Cuál es el top Speed de Roundtail Chub?
20 km/h
¿Qué come Roundtail Chub?
An opportunistic feeder that consumes a wide variety of aquatic and terrestrial prey alongside plant matter.
¿Dónde se encuentra normalmente Roundtail Chub?
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.
¿Cómo caza Roundtail Chub?
Foraging
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