The Emerald Dwarf Rasbora, also known as the Emerald Rasbora or Emerald Dwarf Danio, is a small, peaceful schooling fish loved for its metallic green sheen and subtle red-orange accents. Perfect for nano tanks and planted aquariums, Emerald Dwarf Rasboras bring vibrant color and graceful movement to community setups. Hardy, easy to care for, and highly social, this Danio fish is ideal for both beginner and experienced aquarists looking to add beauty and harmony to their tanks. Native to the cool, clear lakes of Inle Lake in Myanmar, the Emerald Dwarf Rasbora (Danio erythromicron) belongs to the same family as the popular Celestial Pearl Danio. Despite the name “rasbora,” it is actually more closely related to danios. In the wild, these fish thrive in densely vegetated, calm waters rich in oxygen, conditions that can easily be replicated in a freshwater aquarium. In captivity, they are active mid-level swimmers that look stunning in schools. A full-grown Emerald Dwarf Rasbora reaches about 0.8–1 inch (2–2.5 cm), making it one of the most charming nano fish in the hobby. Males display striking metallic green and turquoise bodies with horizontal orange stripes, while females have rounder bodies with softer coloration. Under proper lighting, the emerald rasboras shimmer beautifully, especially when swimming through live plants and moss. Emerald Dwarf Danios are peaceful, social fish that thrive in groups of six or more. They prefer calm, well-planted aquariums with soft lighting and stable water parameters. Ideal Emerald Dwarf Rasbora tank mates include shrimp, small Tetras, Chili Rasboras, Otocinclus catfish, and other peaceful nano species. Their gentle nature and small emerald dwarf rasbora size make them unsuitable for tanks with aggressive or large fish. A planted emerald rasbora aquarium with fine-leaved plants, moss, and driftwood helps them feel secure while showcasing their vibrant color and natural schooling behavior. At our Splashy Fish tropical fish store, our Emerald dwarf Rasbora for sale and other freshwater fish for sale are carefully selected and packed with love! Visit us to buy them online or at our aquarium store in Virginia for more betta fish for sale, freshwater shrimp for sale, live aquatic plants for sale, and aquarium supplies. WHAT YOU CAN EXPECT FROM THIS FISH: Peaceful and colorful schooling fish, which is ideal for community tanks Metallic green body with orange horizontal stripes Grows up to 1 inch and is perfect for nano aquariums Thrives in planted tanks with gentle filtration Active, social, and beginner-friendly RECOMMENDED TANK PARAMETERS: Tank Size: Minimum 10 gallons Temperature: 72°–78°F (22°–26°C) pH: 6.5–7.5 Hardness: 3–10 dGH Filtration: Gentle flow with stable, clean water and live plants CARE GUIDELINES: Diet: Omnivorous. Feed high-quality micro pellets, crushed flakes, and frozen or live foods such as brine shrimp, daphnia, or baby bloodworms. Regular feeding of varied foods enhances coloration and breeding behavior. Tank Setup: A planted tank with moss, ferns, and driftwood provides cover and promotes natural behavior. Use subdued lighting to highlight their metallic colors. Behavior: Peaceful, active, and happiest in groups. Schooling behavior reduces stress and brings out their most vibrant hues. Emerald dwarf Rasbora Frequently Asked Questions (FAQs) Is Emerald dwarf Rasbora a Rasbora or Danio? Although commonly called the Emerald Dwarf Rasbora, this species is actually a Danio, not a true Rasbora. Its scientific name, Danio erythromicron, places it in the Cyprinidae family, alongside Zebra Danios and Celestial Pearl Danios. The name “rasbora” persists due to its small size and peaceful schooling nature, which resembles traditional rasbora species. In aquariums, both Emerald Dwarf Danios and rasboras thrive under similar care conditions, making the name interchangeably used by aquarists. What is the biggest size of Emerald dwarf Rasbora? A full-grown Emerald Dwarf Rasbora typically reaches 0.8 to 1 inch (2–2.5 cm) in length, making it one of the smallest freshwater nano fish in the aquarium hobby. Males are usually slimmer and display more vivid coloration, while females are rounder and slightly larger. Despite their tiny size, a school of Emerald Rasboras creates a vibrant and dynamic display when kept in planted aquariums with soft lighting. How long does Emerald dwarf Rasbora live in aquarium tank? The Emerald Dwarf Rasbora lifespan averages 3 to 5 years in a well-maintained aquarium. These hardy fish thrive when kept in clean, stable water with temperatures between 72°–78°F (22°–26°C) and pH levels around 6.5–7.5. Feeding them a varied diet of micro pellets, flakes, and frozen or live foods such as brine shrimp and daphnia helps promote health and vibrant coloration. Proper care, consistent maintenance, and keeping them in schools of six or more can extend their lifespan even further. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{ "@type": "Question", "name": "Is Emerald dwarf Rasbora a Rasbora or Danio?", "acceptedAnswer": { "@type": "Answer", "text": "Although commonly called the Emerald Dwarf Rasbora, this species is actually a Danio, not a true Rasbora. Its scientific name, Danio erythromicron, places it in the Cyprinidae family, alongside Zebra Danios and Celestial Pearl Danios. The name “rasbora” persists due to its small size and peaceful schooling nature, which resembles traditional rasbora species. In aquariums, both Emerald Dwarf Danios and rasboras thrive under similar care conditions, making the name interchangeably used by aquarists." } },{ "@type": "Question", "name": "What is the biggest size of Emerald dwarf Rasbora?", "acceptedAnswer": { "@type": "Answer", "text": "A full-grown Emerald Dwarf Rasbora typically reaches 0.8 to 1 inch (2–2.5 cm) in length, making it one of the smallest freshwater nano fish in the aquarium hobby. Males are usually slimmer and display more vivid coloration, while females are rounder and slightly larger. Despite their tiny size, a school of Emerald Rasboras creates a vibrant and dynamic display when kept in planted aquariums with soft lighting." } },{ "@type": "Question", "name": "How long does Emerald dwarf Rasbora live in aquarium tank?", "acceptedAnswer": { "@type": "Answer", "text": "The Emerald Dwarf Rasbora lifespan averages 3 to 5 years in a well-maintained aquarium. These hardy fish thrive when kept in clean, stable water with temperatures between 72°–78°F (22°–26°C) and pH levels around 6.5–7.5. Feeding them a varied diet of micro pellets, flakes, and frozen or live foods such as brine shrimp and daphnia helps promote health and vibrant coloration. Proper care, consistent maintenance, and keeping them in schools of six or more can extend their lifespan even further." } }] }
