Description
The Oranda Rosetail is a captivating variety of fancy goldfish, distinguished by its flowing double tail and prominent head growth, or wen. Bred for ornamental purposes, this species is highly prized among aquarists for its unique aesthetic appeal and elegant swimming style. Native to the selectively bred lineage of Carassius auratus, Oranda Rosetails require specific care conditions to thrive in a home aquarium.
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Features of an Oranda Rosetail
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Distinctive rosette-shaped double tail with extensive branching and ruffling
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Prominent raspberry-like wen covering the head and sometimes the gill plates
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Deep, rounded body with a short dorsal profile
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Typically reaches 20 to 25 cm in length at full maturity
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Slow, graceful swimmer due to elaborate fins
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Variety of colour morphs including red, white, calico, blue, and black
The Best Aquarium Size for Oranda Rosetail
Due to their size and waste production, Oranda Rosetails require a minimum tank size of 120 litres for a single specimen. An additional 40 litres should be allocated per additional fish. These goldfish thrive in horizontal tanks that provide ample swimming space and stable water conditions.
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Tank Mate Compatibility for Oranda Rosetail
Oranda Rosetails are peaceful and slow-moving, best housed with similarly tempered species. Ideal tank mates include:
Avoid housing them with fast or aggressive species that may outcompete them for food or nip at their fins.
Diet for Oranda Rosetail
A balanced diet is essential to maintain the health and wen development of Oranda Rosetails. Feed high-quality sinking pellets formulated for fancy goldfish, supplemented with:
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Blanched vegetables (spinach, peas, zucchini)
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Frozen or live protein sources (bloodworms, daphnia, brine shrimp)
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Occasional treats like gel-based goldfish diets
Feed 2–3 times daily in small quantities to prevent overfeeding and reduce waste accumulation.
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Aquarium Setup for Oranda Rosetail
Aquarium Filtration
Strong biological and mechanical filtration is crucial due to their high bioload. Canister filters or sponge filters with low current are ideal.
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Aquarium Plants
Use hardy, low-light plants such as Anubias, Java fern, or hornwort. Avoid delicate species, as Orandas may uproot or nibble on foliage.
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Aquarium Lighting
Moderate lighting is sufficient. LEDs with adjustable brightness are recommended to avoid stress and algae growth.
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Aquarium Heating
Maintain water temperature between 20°C and 23°C. While goldfish are cold-water species, stability in this range supports their immunity and digestion. Water pH 6.5-7.5
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Aquarium Substrate
Fine sand or smooth gravel is preferred to prevent damage to their sensitive wen and mouth when foraging.
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Aquarium Decorations
Opt for rounded, smooth decorations without sharp edges. Use ornaments sparingly to preserve open swimming space.
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