How to Identify Caspian Shemaya

To identify Caspian Shemaya (Alburnus chalcoides), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Dorsal side is dark greenish-grey to bluish-grey, fading to bright silvery on the flanks and belly. Fins are typically pale, sometimes with a yellowish tint, especially the pectoral and pelvic fins. A distinct dark stripe may be present along the lateral line in some individuals.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Elongated, slender body, somewhat compressed laterally., Large, prominent scales., Terminal mouth, slightly upturned., Long anal fin with 12-17 branched rays., Lateral line complete and slightly curved downwards anteriorly.

Dorsal fin

Short, with 3 unbranched and 7-9 branched rays, positioned slightly behind the pelvic fins.

Tail fin

Deeply forked caudal fin.

Pectoral fin

Relatively long, reaching or nearly reaching the pelvic fin origin.

Distinctive fins

Anal fin is notably long compared to many other cyprinids.

Identification Tips

1. 1

   Body Shape

   Look for a very elongated, torpedo-shaped body, which is more slender than many other cyprinids.

2. 2

   Coloration

   Observe the distinct silvery flanks and belly contrasting with a darker dorsal side. Absence of prominent spots or patterns.

3. 3

   Anal Fin Length

   Count the rays in the anal fin; 12-17 branched rays are characteristic and longer than in many similar species.

4. 4

   Mouth Position

   Note the terminal mouth, which is slightly upturned, indicating its feeding habits on surface or mid-water prey.

5. 5

   Lateral Line

   The lateral line is complete and often appears slightly curved downwards anteriorly.

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