Come identificare Triotto

Per identificare Triotto (Squalius squalus), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Dorsal side is typically dark greenish-brown to grey, fading to silvery-white on the flanks and belly. Fins are generally dusky, sometimes with a reddish tinge, especially the anal and pectoral fins in breeding males.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Large, robust head with a wide, terminal mouth., Relatively large scales, with 40-46 scales along the lateral line., Strong, slightly compressed body., Convex dorsal profile.

Pinna dorsale

Short, with 3 unbranched and 7-9 branched rays. Originates slightly behind the pelvic fin origin.

Pinna caudale

Deeply forked, with pointed lobes.

Pinna pettorale

Relatively short and rounded, with 17-18 rays.

Pinne distintive

Anal fin is short with 3 unbranched and 7-9 branched rays. Pelvic fins are abdominal.

Consigli per l'identificazione

1. 1

   Body Shape and Size

   Robust, elongated body, typically reaching 30-60 cm in length, though specimens over 80 cm and 8 kg have been recorded. The body is slightly compressed laterally.

2. 2

   Head and Mouth

   Large head with a broad, terminal mouth that extends to below the anterior margin of the eye. No barbels present.

3. 3

   Scales

   Large, cycloid scales. Count 40-46 scales along the lateral line, which is complete and slightly decurved.

4. 4

   Fin Characteristics

   Dorsal fin has 3 unbranched and 7-9 branched rays. Anal fin has 3 unbranched and 7-9 branched rays. Caudal fin is deeply forked. Pectoral and pelvic fins are relatively small.

5. 5

   Coloration

   Dorsal surface dark grey-green to brown, flanks silvery, belly white. Fins are generally dusky, sometimes with a reddish tint, especially in breeding males.

Esplora Triotto