Emerald Dwarf Rasbora (Celestichthys erythromicron)
Product description
Emerald Dwarf Rasboras are one of the most beautiful nano fish for planted aquariums. Their shimmering emerald-green stripes combined with bright orange fins create an incredible contrast that really pops in aquascaped tanks.
These peaceful micro fish are perfect for nano aquariums, shrimp tanks, and planted community tanks. They are active shoaling fish and display their best colors when kept in groups.
Quick Facts
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Scientific Name: Celestichthys erythromicron
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Common Name: Emerald Dwarf Rasbora / Emerald Dwarf Danio
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Origin: Lake Inle, Myanmar
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Adult Size: ~0.8–1 inch (2–2.5 cm)
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Temperament: Peaceful, shy nano fish
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Tank Size: 10 gallons or larger
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Group Size: 6–10+ recommended for best behavior
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Lifespan: 3–5 years with proper care
Aquarium Care
Emerald Dwarf Rasboras prefer planted aquariums with plenty of cover. They feel most comfortable in well-established tanks with gentle filtration and stable water parameters.
Water Parameters
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Temperature: 68–76°F (20–24°C)
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pH: 7.0–8.0
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Water Hardness: Soft to moderately hard
These fish are omnivores and will accept:
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Micro pellets
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Crushed flakes
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Frozen foods
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Live foods such as baby brine shrimp or daphnia
🚚 Shipping
- USPS Priority and Fedex Overnight: Live fish are shipped on Monday–Tuesday only.
- Send us email to request for other days!
💰 Refund & DOA Policy
- DOA (Dead on Arrival):
We offer a full refund (fish cost only) or replacement.
To qualify, please send: - 2 clear photos of the fish/shrimp inside the sealed bag, and 1 clear photo outside the bag within 2 hours of delivery
- Carrier Delays:
If total transit time exceeds 3 days, the DOA guarantee is void.
More details: https://justfishything.com/policies/refund-policy
🐠 Acclimation Guide
- Temperature Match:
Make sure the bag water is close to your tank temperature. - Float the Bag:
Place the sealed bag in your tank for 15–20 minutes. - Water Mixing:
Gradually add small amounts of tank water into the bag over 15–20 minutes. - Release:
Gently net the fish into the tank.
❗ Do not pour bag water into your tank to avoid contamination.
📸 Photos Disclaimer
We do our best to capture each fish’s true appearance.
Photos are not edited, but colors may vary slightly in different lighting.
Have a question?
Emerald Dwarf Rasbora (Celestichthys erythromicron)