How to Identify Silver Rasbora

To identify Silver Rasbora (Rasbora daniconius), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Overall silvery body, often with a yellowish or greenish tint dorsally. A prominent dark, often black or dark brown, lateral stripe extends from the operculum to the caudal peduncle. Fins are typically hyaline (transparent) to yellowish, sometimes with a reddish tinge, especially in breeding males.

Scale type

cycloid

Mouth position

superior

Distinctive features

Slender, elongated body, Prominent dark lateral stripe, Small, upturned mouth, Forked caudal fin

Dorsal fin

Single, short-based dorsal fin located mid-body, typically with 2 unbranched and 7-8 branched rays.

Tail fin

Deeply forked caudal fin with pointed lobes.

Pectoral fin

Paired pectoral fins are relatively short, typically with 1 unbranched and 11-13 branched rays.

Distinctive fins

Pelvic fins are small, abdominal, and located beneath the dorsal fin origin. Anal fin is short-based, with 2 unbranched and 5-6 branched rays.

Identification Tips

1. 1

   Body Shape and Size

   Look for a slender, elongated body, typically growing up to 10-15 cm (4-6 inches) in length, though often smaller in aquariums.

2. 2

   Lateral Stripe

   The most distinguishing feature is the prominent, dark (black to dark brown) lateral stripe running from the gill cover to the base of the tail.

3. 3

   Coloration

   Overall silvery body, sometimes with a yellowish or greenish sheen on the back. Fins are generally clear or yellowish.

4. 4

   Mouth Position

   The mouth is small and slightly upturned, indicating its surface-feeding habits.

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