Come identificare Rudd

Per identificare Rudd (Scardinius erythrophthalmus), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

compressed

Colorazione

The back is typically dark green to brownish-green, fading to silvery flanks and a white belly. The most striking feature is the bright red to orange coloration of the pectoral, pelvic, anal, and caudal fins. The iris of the eye is often golden-yellow with a reddish spot.

Tipo di squame

cycloid

Posizione della bocca

superior

Caratteristiche distintive

Bright red fins (especially pelvic, anal, and caudal), Upward-pointing mouth (superior mouth), Deep, laterally compressed body, Large, golden-yellow eyes with a reddish spot, Lateral line scales typically 37-42

Pinna dorsale

Short, located relatively far back on the body, with 8-9 branched rays. Its origin is typically behind the origin of the pelvic fins.

Pinna caudale

Deeply forked, with prominent red coloration.

Pinna pettorale

Relatively short, with 15-17 rays, often bright red.

Pinne distintive

All fins, particularly the paired fins and anal fin, are typically bright red or orange, a key distinguishing feature.

Consigli per l'identificazione

1. 1

   Mouth Position

   The Rudd has a distinctly superior (upward-pointing) mouth, adapted for surface feeding. This differentiates it from the Roach (Rutilus rutilus) which has a terminal mouth.

2. 2

   Fin Coloration

   The bright red or orange coloration of all fins, especially the pelvic, anal, and caudal fins, is a primary identifier. Roach typically have red fins, but they are usually duller and the dorsal and caudal fins are often greyish.

3. 3

   Dorsal Fin Origin

   The origin of the dorsal fin in Rudd is typically behind the origin of the pelvic fins. In Roach, the dorsal fin origin is usually directly above or slightly in front of the pelvic fin origin.

4. 4

   Body Shape

   Rudd have a deeper, more compressed body compared to the more slender Roach.

5. 5

   Eye Color

   The eye of the Rudd is typically golden-yellow with a reddish spot, whereas the Roach usually has a distinct red iris.

Esplora Rudd