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Körperliche Merkmale

Körperform

elongated

Färbung

Dorsal side is typically yellowish-brown to olive-brown, often with 4-5 dark, irregular transverse bands or blotches that extend onto the flanks. The ventral side is whitish. This cryptic coloration provides excellent camouflage against the riverbed. Fins are often mottled or banded.

Schuppentyp

ctenoid

Maulstellung

inferior

Besondere Merkmale

Extremely elongated, cylindrical body, almost snake-like in appearance., Two distinct dorsal fins, widely separated., Small, inferior mouth., Absence of a swim bladder, contributing to its benthic lifestyle., Rough, ctenoid scales.

Rückenflosse

Two separate dorsal fins. The first dorsal fin has 8-10 strong, spiny rays. The second dorsal fin has 1 spiny ray and 17-20 soft rays.

Schwanzflosse

Caudal fin is slightly emarginate or truncate, with 17-19 rays.

Brustflosse

Pectoral fins are relatively large and fan-shaped, with 13-15 rays, used for maintaining position in strong currents.

Auffällige Flossen

Pelvic fins are thoracic, located directly below the pectoral fins, and are well-developed, aiding in anchoring to the substrate.

Bestimmungstipps

1. 1

   Body Shape

   Look for its exceptionally elongated, slender, and cylindrical body, which is unique among European percids.

2. 2

   Dorsal Fins

   Note the two distinctly separated dorsal fins. The first is spiny, and the second is soft-rayed.

3. 3

   Mouth Position

   Observe the small, inferior mouth, adapted for feeding on benthic invertebrates.

4. 4

   Coloration

   Identify the cryptic yellowish-brown to olive-brown coloration with dark transverse bands, providing camouflage on the riverbed.

5. 5

   Size

   Adults typically reach 20-30 cm (8-12 inches) in length, with a maximum recorded length of about 48 cm (19 inches).

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