Emerald Eye Rasbora (Rasbora cephalotaenia) is a small, peaceful freshwater fish known for its metallic body and striking emerald-green eyes. It is ideal for community tanks and adds vibrant color and activity.
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Emerald Eye Rasbora (Rasbora cephalotaenia) is a small, peaceful freshwater fish known for its metallic body and striking emerald-green eyes. It is ideal for community tanks and adds vibrant color and activity.
Slender, laterally compressed body with silvery metallic sheen and subtle green reflections. Eyes are a vivid emerald-green, giving the species its name. Fins are mostly transparent with slight orange or red tinges. Males are slightly slimmer with brighter eye coloration; females are rounder and paler.
4–6 years with proper care
Omnivorous; feeds on high-quality flakes, micro pellets, frozen foods, and live foods such as daphnia, brine shrimp, and micro worms. Occasional blanched vegetables can supplement their diet and maintain health.
Emerald Eye Rasboras are perfect for community aquariums due to their peaceful nature, stunning eyes, and active schooling behavior. They bring elegance and movement to planted tanks.
Beginner to Intermediate – hardy but prefers stable water, proper schooling, and high-quality nutrition.
20+ gallons (for a small school)
6.5 to 7.5
5–15 dGH
74–80°F (23–27°C)
2 inches
Other small Rasboras, Harlequin Rasboras, small tetras, dwarf gouramis, peaceful danios. Avoid aggressive or large species.
Large, aggressive, or fast species that may outcompete or stress them.
Rasbora cephalotaenia
Cyprinidae
Southeast Asia – Indonesia and Malaysia; slow-moving streams and rivers with dense vegetation.
Highly social; best kept in schools of 6 or more. Peaceful and compatible with other small community fish.
Feed 2–3 times daily with flakes, micro pellets, frozen/live foods. Occasionally supplement with finely chopped or blanched vegetables to enhance coloration and health.
Egg-scatterer; deposits eggs among fine-leaved plants or spawning mops. Adults do not guard eggs. Condition males and females with protein-rich foods before spawning. Fry feed on infusoria or newly hatched brine shrimp.
pH: 6.5–7.5, Temperature: 74–80°F (23–27°C), Hardness: 5–15 dGH, Ammonia/Nitrite: 0 ppm, Nitrate: <20 ppm
Sensitive to water quality fluctuations; prone to ich and stress-related illnesses if kept in suboptimal conditions. Maintain clean water and proper school sizes.
Peaceful, social, and active. Best kept in schools of at least 6–10 individuals to encourage natural schooling behavior. Compatible with other small, non-aggressive community fish.
Native to Southeast Asia, primarily Indonesia and Malaysia, Emerald Eye Rasboras inhabit slow-moving streams and rivers with dense vegetation. Adults grow up to 2 inches. They thrive in planted aquariums with moderate water flow and open swimming areas. Ideal for beginner and intermediate aquarists, they are hardy, peaceful, and visually striking when kept in proper school sizes.