Dwarf Emerald Rasbora (Microrasbora erythromicron) – Rare Nano Schooling Fish for Planted Tanks

The Dwarf Emerald Rasbora (Microrasbora erythromicron) is a vibrant nano schooling fish prized for its striking emerald-green body with subtle striping and red/orange accents. Native to the lakes and streams of Myanmar, this peaceful species is ideal for planted tanks, nano setups, and aquascapes.

Care & Requirements

• Size: ~1 inch (2.5 cm)
• Temperament: Peaceful, schooling
• Tank Size: 10+ gallons recommended
• Diet: Omnivorous – micro-pellets, crushed flakes, and frozen/live micro foods
• Temperature: 72–78°F (22–26°C)
• pH: 6.5–7.5
• Hardness: 3–12 dGH

Best Tank Mates (Peaceful Nano Fish)

• Chili Rasboras – similar size and temperament
• Harlequin Rasboras (smaller groups in 20g+)
• Ember Tetras – bright color, very peaceful
• Pygmy Corydoras – gentle bottom dwellers
• Otocinclus – great algae helpers
• Clown Killifish – peaceful top swimmers

Great With Invertebrates

• Neocaridina Shrimp (adult shrimp usually safe)
• Amano Shrimp
• Nerite Snails
• Mystery Snails

Note: they may snack on baby shrimp fry.

Tank Mates to Avoid

• Larger tetras
• Barbs (fin nippers)
• Aggressive gouramis
• Cichlids
• Fast, boisterous fish

These can easily outcompete the rasboras for food.

Ideal Setup

• Tank size: 10–20 gallons
• Group size: 8+ (they color up better in larger groups)
• Heavy planting, floating plants, and a darker substrate help them feel secure

Frequently Asked Questions

Q: Are Dwarf Emerald Rasboras good for beginners?
A: Yes! They're hardy and thrive in stable, well-planted aquariums.

Q: How many should I keep together?
A: Groups of 6 or more will help them feel secure and display natural schooling behavior.

Q: Are they safe with shrimp?
A: Yes, they're peaceful and safe with most dwarf shrimp and snails.

Q: Do they need live plants?
A: Highly recommended! They love planted tanks and lush aquascapes.

Q: Are they rare?
A: Yes, they're considered a rare and beautiful nano species prized by aquascapers.

Shop Dwarf Emerald Rasbora at Tropical Treasures Wyo

Add a brilliant splash of emerald color to your planted aquarium with healthy, home-raised Dwarf Emerald Rasboras from Tropical Treasures Wyo LLC in Cheyenne, Wyoming.

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