Come identificare Rovella

Per identificare Rovella (Rutilus rubilio), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

elongated

Colorazione

Dorsal side typically dark greenish-brown to olive, fading to silvery flanks and a whitish belly. Fins are often reddish, especially the pectoral, pelvic, and anal fins, with the caudal fin sometimes having a reddish tinge. During breeding, males can exhibit more intense red coloration and nuptial tubercles on the head.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Slender, fusiform body, Relatively small, terminal mouth, Large scales, Often reddish fins, particularly in breeding males, Lateral line complete, with 39-43 scales

Pinna dorsale

Single dorsal fin, typically with 3 unbranched and 8-9 branched rays. Originates slightly behind the pelvic fin origin.

Pinna caudale

Deeply forked caudal fin with pointed lobes.

Pinna pettorale

Paired pectoral fins, typically with 15-17 rays, often reddish.

Pinne distintive

Anal fin with 3 unbranched and 8-10 branched rays. Pelvic fins with 1 unbranched and 8 branched rays, often reddish.

Consigli per l'identificazione

1. 1

   Body Shape and Size

   Look for a slender, somewhat compressed body, typically reaching up to 20-25 cm (8-10 inches) in length, though larger specimens up to 30 cm (12 inches) have been recorded.

2. 2

   Coloration

   Observe the silvery flanks and whitish belly, contrasting with a darker back. The presence of reddish fins, especially the pectoral, pelvic, and anal fins, is a key indicator, particularly in mature individuals.

3. 3

   Mouth Position

   Note the relatively small, terminal mouth, which is characteristic of the species.

4. 4

   Lateral Line

   Count the scales along the complete lateral line, which typically ranges from 39 to 43 scales.

5. 5

   Fin Ray Counts

   For precise identification, count the fin rays: Dorsal fin (3 unbranched, 8-9 branched), Anal fin (3 unbranched, 8-10 branched), Pectoral fin (15-17 rays), Pelvic fin (1 unbranched, 8 branched).

Esplora Rovella