The Celestial Pearl Danio, also known as Galaxy Rasbora or Danio margaritatus, is a small and visually striking freshwater fish species. It belongs to the family Cyprinidae and is native to the small streams and ponds of Myanmar (Burma) in Southeast Asia. This species gained popularity among aquarists due to its vibrant colors and unique patterns.
Here are some key features and characteristics of the Celestial Pearl Danio:
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Appearance: Celestial Pearl Danios have a small and slender body with a maximum size of about 1 inch (2.5 cm). They display a stunning combination of colors, including a vibrant metallic blue body with orange-red or reddish-brown patches and spots. Males usually have more intense colors and longer fins than females. Additionally, they possess a distinctive pattern of "pearl" or "galaxy-like" spots on their bodies, hence the name.
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Behavior: Celestial Pearl Danios are generally peaceful and active fish. They are known to be schooling fish, and it is recommended to keep them in groups of at least six individuals or more. Being in a larger group helps them feel more secure and encourages natural behavior. They tend to swim in the middle and upper levels of the aquarium.
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Habitat and Tank Requirements: In their natural habitat, Celestial Pearl Danios inhabit slow-moving or stagnant waters, such as streams and ponds, with dense vegetation and leaf litter. When keeping them in captivity, it is important to replicate these conditions. Provide a well-planted tank with areas of open swimming space. Floating plants or leaf litter can create shaded areas and offer hiding spots. They appreciate a clean and well-filtered aquarium with gentle water flow.
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Water Parameters: Celestial Pearl Danios prefer slightly acidic to neutral water conditions. The recommended temperature range for them is around 73-79°F (23-26°C), with a pH between 6.5 and 7.5. It's important to maintain stable water parameters and perform regular water changes to keep the water quality high.
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Feeding: Celestial Pearl Danios are omnivorous and have a small mouth suited for consuming tiny food particles. In the wild, they feed on small invertebrates, zooplankton, and algae. In captivity, they readily accept high-quality dry and frozen foods, such as micro-pellets, small flakes, and live or frozen daphnia, brine shrimp, or cyclops. It's beneficial to provide a varied diet to ensure their nutritional needs are met.
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Compatibility: Celestial Pearl Danios are generally peaceful and can be kept with other small, peaceful fish species. They are suitable tankmates for other small Danio species, Rasboras, small tetras, dwarf shrimp, and peaceful bottom-dwelling fish like Corydoras catfish. It's important to avoid housing them with larger or aggressive tankmates, as they may become stressed or outcompeted for food.
Breeding Celestial Pearl Danios can be challenging, as they require specific conditions and stimuli to initiate spawning. A separate breeding tank with soft, slightly acidic water and fine-leaved plants for egg scattering can be set up. The eggs are scattered among the plants, and the parents should be removed after spawning to prevent them from consuming the eggs. The fry are tiny and require infusoria or other suitable food for their initial stages of growth.
Celestial Pearl Danios are highly prized for their beauty and are a popular choice for aquarists who want to add a touch of elegance to their aquarium. With proper care and suitable tank conditions, they can thrive and become a captivating centerpiece in a small or medium-sized aquarium.
