How to Identify Pool Barb

To identify Pool Barb (Barbodes stigma), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery body with a yellowish or greenish sheen, particularly on the dorsal surface. Fins are typically hyaline (clear) to yellowish. A distinct, round to oval black spot is present on the caudal peduncle, often extending onto the base of the caudal fin. Some individuals may exhibit a faint lateral stripe.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Prominent black spot on the caudal peduncle, Absence of barbels (a key differentiating feature from many other barb species), Laterally compressed body, Relatively large scales

Dorsal fin

Single dorsal fin with 3-4 unbranched and 8 branched rays. The last unbranched ray is typically strong and serrated.

Tail fin

Forked caudal fin with rounded lobes.

Pectoral fin

Paired pectoral fins, relatively short.

Distinctive fins

Pelvic fins are also paired and originate slightly behind the pectoral fin base. Anal fin has 3 unbranched and 5 branched rays.

Identification Tips

1. 1

   Caudal Peduncle Spot

   The most reliable identification feature is the distinct, round to oval black spot located on the caudal peduncle, just anterior to the caudal fin base. This spot is usually very prominent.

2. 2

   Absence of Barbels

   Unlike many other barb species, Barbodes stigma lacks barbels around its mouth. This is a crucial diagnostic characteristic.

3. 3

   Body Shape and Coloration

   Its silvery, laterally compressed body with a yellowish or greenish dorsal sheen, combined with the caudal spot, helps distinguish it from other small cyprinids.

4. 4

   Fin Ray Count

   Counting the fin rays, particularly the dorsal fin (3-4 unbranched, 8 branched) and anal fin (3 unbranched, 5 branched), can aid in confirmation, especially for scientific identification.

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