How to Identify Emerald Dwarf Rasbora

To identify Emerald Dwarf Rasbora (Celestichthys erythromicron), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is primarily reddish-orange to pinkish, adorned with 10-14 iridescent emerald-green to bluish-green vertical bars that extend from the dorsal surface to the ventral side. The fins are largely translucent, sometimes with a faint reddish tint, especially in males. Males typically exhibit more intense coloration and may have redder fins, particularly the anal and caudal fins, and a more pronounced emerald barring.

Scale type

cycloid

Mouth position

superior

Distinctive features

Small size, typically not exceeding 2.5 cm (1 inch) in total length., Distinctive pattern of iridescent emerald-green vertical bars., Sexual dimorphism: males are generally more brightly colored and slender, while females are rounder, especially when gravid.

Dorsal fin

Single, relatively small, positioned mid-body.

Tail fin

Forked, with rounded lobes.

Pectoral fin

Small and transparent, positioned ventrally behind the operculum.

Distinctive fins

All fins are generally clear to slightly reddish, lacking prominent markings.

Identification Tips

1. 1

   Size

   Adults rarely exceed 2.5 cm (1 inch) in total length, making them one of the smallest cyprinids.

2. 2

   Coloration and Pattern

   Look for the characteristic reddish-orange body with 10-14 distinct, iridescent emerald-green vertical bars. This pattern is unique among similar small cyprinids.

3. 3

   Mouth Position

   The mouth is upturned (superior), indicating a surface or mid-water feeder.

4. 4

   Fin Coloration

   Males often display more intense red coloration in their fins, particularly the anal and caudal fins, compared to the more subdued females.

Explore Emerald Dwarf Rasbora