How to Identify Red-tailed Barb

To identify Red-tailed Barb (Enteromius radiatus), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

The body is generally silvery to golden-brown, often with a faint lateral stripe or series of dark spots along the lateral line, which can be more pronounced in some populations or during breeding. The most distinguishing feature is the bright red to orange coloration on the caudal fin, particularly on the outer rays and posterior margin. Fins are typically hyaline (clear) to yellowish, with the caudal fin being the most vibrant.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Bright red to orange caudal fin, Small, often indistinct, dark spots along the lateral line, Two pairs of small barbels at the mouth (rostral and maxillary)

Dorsal fin

Single dorsal fin, typically with 3-4 unbranched and 8 branched rays. The last unbranched ray is often ossified and serrated posteriorly.

Tail fin

Deeply forked caudal fin with prominent red/orange coloration.

Pectoral fin

Paired pectoral fins, relatively small.

Distinctive fins

Anal fin with 3 unbranched and 5 branched rays. Pelvic fins are present.

Identification Tips

1. 1

   Caudal Fin Coloration

   The most reliable identifier is the distinct red or orange coloration on the caudal (tail) fin, especially noticeable in adult specimens.

2. 2

   Body Shape and Size

   A relatively slender, torpedo-shaped body, typically reaching up to 15 cm (6 inches) in length.

3. 3

   Barbels

   Presence of two pairs of small barbels around the mouth, though these can be difficult to observe without close inspection.

4. 4

   Lateral Line Spots

   Look for a series of small, often faint, dark spots or a broken lateral stripe along the body, which can vary in prominence.

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