Emerald Eye Rasbora (Brevibora dorsiocellata) 2-3CM

Brevibora dorsiocellata
Common name: Emerald dwarf rasbora

Brevibora dorsiocellata is a small, peaceful freshwater cyprinid fish native to Southeast Asia and popular in the aquarium trade.

Quick Overview

• Family: Cyprinidae
• Genus: Brevibora
• Maximum size: ~2–2.5 cm (under 1 inch)
• Lifespan: ~3–5 years in good conditions
• Temperament: Very peaceful, schooling

Natural Distribution & Habitat

• Found primarily in Thailand and parts of the Malay Peninsula
• Inhabits slow-moving streams, forest creeks, and peat swamp waters
• Prefers soft, slightly acidic water with leaf litter and subdued lighting

Appearance

• Slender, translucent body with a distinct dark ocellus (eye-like spot) on the dorsal region
• Iridescent greenish or bronze sheen under proper lighting
• Fins are mostly clear, giving it a delicate appearance

Aquarium Care

Tank size:

• Minimum 10 gallons for a small school

Water parameters (ideal):

• Temperature: 22–26 °C (72–79 °F)
• pH: 5.5–7.0
• Hardness: Soft (up to ~8 dGH)

Behavior & stocking:

• Must be kept in groups of at least 6–8, larger is better
• Excellent choice for nano community tanks
• Compatible with other tiny, non-aggressive species (e.g., small rasboras, micro tetras, shrimp)

Diet

• Omnivorous micro-predator
• Accepts:
  • Fine-quality flakes or micro pellets
  • Live and frozen foods (baby brine shrimp, daphnia, cyclops)
• Small food size is essential due to their tiny mouths

Breeding Notes (advanced)

• Egg scatterers with no parental care
• Spawning often occurs in heavily planted tanks
• Adults may eat eggs; separate breeding setup recommended if fry are desired