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  • Bubba's Fishs Notropis Chrosomus - Rainbow

Notropis Chrosomus - Rainbow

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Notropis Chrosomus (Rainbow Cyprin)

The Notropis chromomus, also known as the rainbowfish, is a small schooling fish native to North America. Here is some essential information about it:


  • Average size: About 5 cm
  • Maximum size: Up to 8 cm

The rainbow mink sports a two-tone coloration, with a body that is primarily blue and pink. Males have a silvery-blue hue enhanced with pink and mauve undertones, while females maintain a golden-brown color with silvery scales. During the breeding season, both sexes turn bright red.

Lifestyle and behavior

  • Diet: Carnivorous
  • Sociability: Lives in shoals
  • Biological rhythm: Diurnal

The rainbow cyprin naturally resides at mid-depth and appreciates wide open spaces. It is independent and does not care much about other species.


  • Reproduction mode: Oviparous (lays in open water)

In the wild, reproduction takes place from May to June. Eggs are deposited in shallow areas with low current.

Origin and habitat

  • Origin: North America, Mobile River watershed in Alabama, United States.
  • Habitat: Prefers areas with slow current and small, well-oxygenated streams.

Aquarium maintenance

  • An aquarium with a capacity of at least 100 liters is required to raise the rainbow cyprin.

Ideal water temperature: Between 1°C and 30°C

Water pH: Between 6.5 and 7.5

Maintenance in an outdoor pond or basin

Size and group: For their well-being, keep them in groups. They enjoy company and swim in schools.

Water Conditions: Water temperature should be maintained between 0°C and 30°C. can spend the winter outside if the pond is buried and deep enough. Make sure the pond or pond offers enough oxygen.

Pond size: To keep them outdoors, a pond of at least 100 liters is recommended.

Compatibility with other fish: They are peaceful and can coexist with goldfish and koi.

Remember that group maintenance is essential to ensure their happiness in your aquarium.

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