How to Identify Black Spot Barb

To identify Black Spot Barb (Puntius filamentosus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Males exhibit a vibrant reddish-orange body with iridescent scales, especially during breeding. Females are typically duller, with a silvery-yellow to olive-brown body. Both sexes have a prominent black spot on the caudal peduncle. The dorsal fin often has a black margin, and the caudal fin can be reddish.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Prominent black spot on the caudal peduncle, Elongated dorsal fin rays in mature males, Two pairs of small barbels (often difficult to see without close inspection), Forked caudal fin

Dorsal fin

Dorsal fin with 3-4 unbranched and 8 branched rays. In mature males, the anterior branched rays are significantly elongated, forming filaments.

Tail fin

Deeply forked caudal fin, often reddish.

Pectoral fin

Pectoral fins are relatively small and translucent.

Distinctive fins

Pelvic fins are also small. Anal fin has 3 unbranched and 5 branched rays. The elongated dorsal fin rays in males are a key distinguishing feature.

Identification Tips

1. 1

   Black Spot

   Look for a distinct, round black spot located on the caudal peduncle, just before the tail fin. This is a primary identifier.

2. 2

   Dorsal Fin Filaments (Males)

   Observe the dorsal fin. Mature males will have noticeably elongated, filamentous rays extending from the dorsal fin, which are absent or much shorter in females and juveniles.

3. 3

   Coloration

   Males display vibrant reddish-orange hues, especially when breeding, while females are more subdued in color (silvery-yellow to olive-brown).

4. 4

   Body Shape

   Note the moderately compressed, elongated body shape typical of barbs.

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