How to Identify Chili Rasbora

To identify Chili Rasbora (Boraras brigittae), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is predominantly reddish-orange to deep red, especially in males, with a prominent, elongated black spot or stripe running horizontally along the lateral line. This black marking is often bordered by an iridescent green or blue line above and below. Fins are typically translucent with reddish tints, and the dorsal and anal fins may have small black markings.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Small size, typically reaching a maximum standard length of 2-2.5 cm (0.8-1 inch)., Vibrant red body coloration, particularly intense in mature males., Distinctive black lateral stripe or spot, often iridescently outlined., Absence of barbels.

Dorsal fin

Single, relatively small, positioned mid-body.

Tail fin

Forked, transparent with reddish hues.

Pectoral fin

Small and transparent, positioned ventrally.

Distinctive fins

All fins are generally small and proportionate to the body size, lacking any elaborate extensions.

Identification Tips

1. 1

   Size

   Its extremely small adult size (2-2.5 cm) immediately distinguishes it from most other rasbora species.

2. 2

   Coloration and Markings

   The intense red body color combined with the distinct black lateral stripe/spot, often with iridescent blue/green borders, is a key identifier. The black marking is typically more elongated and less rounded than in some other Boraras species.

3. 3

   Habitat Preference

   Its natural occurrence in blackwater peat swamps of Borneo is a strong indicator.

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