How to Identify Gudgeon

To identify Gudgeon (Gobio), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal side is typically olive-brown to grey-brown, fading to a lighter, silvery-white belly. Distinctive dark blotches or spots are present along the lateral line, forming a broken band. Fins are often translucent with faint dark spots.

Scale type

cycloid

Mouth position

subterminal

Distinctive features

Two small barbels at the corners of the subterminal mouth, Large, prominent eyes positioned high on the head, Mottled coloration for camouflage, Relatively large, cycloid scales

Dorsal fin

Single, short-based dorsal fin with 2-3 unbranched and 6-8 branched rays.

Tail fin

Forked caudal fin with 17-19 rays.

Pectoral fin

Paired pectoral fins, typically with 13-17 rays.

Distinctive fins

All fins are generally rounded at the tips. The anal fin has 2-3 unbranched and 5-7 branched rays. Pelvic fins are located abdominally.

Identification Tips

1. 1

   Barbels

   Presence of two small, fleshy barbels at the corners of the mouth is a key identifier, distinguishing it from many other small cyprinids.

2. 2

   Mouth Position

   The subterminal mouth, adapted for bottom feeding, is characteristic.

3. 3

   Lateral Blotches

   A series of dark, often irregular blotches along the lateral line is a consistent feature.

4. 4

   Body Shape

   Its elongated, somewhat cylindrical body, contrasting with the more compressed bodies of many other small cyprinids like minnows.

Explore Gudgeon