How to Identify Silver Rasbora

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

Physical Characteristics

Body shape

elongated

Coloration

The body is generally silvery to yellowish-brown dorsally, fading to a bright silvery-white ventrally. A distinct, broad, silvery-gold to iridescent lateral stripe extends from behind the operculum to the caudal peduncle. Fins are hyaline (transparent) to slightly yellowish.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Prominent silvery-gold lateral stripe, Slender, elongated body, Forked caudal fin

Dorsal fin

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

Tail fin

Deeply forked caudal fin with pointed lobes.

Pectoral fin

Paired pectoral fins are relatively small and located ventrally.

Distinctive fins

Pelvic fins are small and located abdominally. Anal fin is short, typically with 2 unbranched and 5 branched rays.

Identification Tips

1. 1

   Lateral Stripe

   Look for the prominent, broad, silvery-gold to iridescent stripe running along the flank from the gill cover to the tail base. This is the most distinguishing feature.

2. 2

   Body Shape

   Observe the slender, elongated body, which is typical for many Rasbora species but combined with the stripe, aids identification.

3. 3

   Fin Coloration

   Fins are generally clear or slightly yellowish, lacking prominent markings or coloration, which helps differentiate it from some other Rasbora species with colored fins.

4. 4

   Size

   Adults typically reach a maximum standard length of 10-12 cm (4-5 inches), though often smaller in aquariums.

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