How to Identify Danio

To identify Danio (Danio), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is typically silver-gold to brassy-gold with 5-7 prominent, iridescent, dark blue to black horizontal stripes extending from the operculum to the caudal fin. These stripes are often interrupted or broken on the caudal fin itself. Fins are generally clear or slightly yellowish, sometimes with a faint dark stripe.

Scale type

cycloid

Mouth position

superior

Distinctive features

Distinctive horizontal blue/black stripes on a golden/silver body, Small, slender body, Two pairs of barbels (often very small and difficult to see, especially the anterior pair)

Dorsal fin

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

Tail fin

Forked caudal fin (homocercal).

Pectoral fin

Paired pectoral fins, relatively small.

Distinctive fins

Anal fin is longer than the dorsal fin, with 12-14 branched rays. Pelvic fins are small and located abdominally.

Identification Tips

1. 1

   Stripes

   Look for the characteristic 5-7 dark blue/black horizontal stripes running the length of the body on a lighter background. This is the most defining feature.

2. 2

   Size and Shape

   Small, slender, torpedo-shaped body, typically reaching 3-4 cm (1.2-1.6 inches) in length.

3. 3

   Barbels

   While often difficult to see, the presence of two pairs of small barbels around the mouth can help distinguish them from some similar species.

4. 4

   Fin Structure

   Note the relatively short dorsal fin and the longer anal fin. The caudal fin is distinctly forked.

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