Come identificare European Grayling

Per identificare European Grayling (Thymallus thymallus), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Silvery-grey flanks, often with a purplish or iridescent sheen, especially on the dorsal side. The back is typically darker, ranging from olive-green to brownish. The belly is whitish. Young fish may have parr marks (vertical bars) which fade with age. The dorsal fin is often adorned with rows of reddish-brown spots or stripes.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Very large, high, and elongated dorsal fin, resembling a sail, particularly prominent in males., Small, protractile mouth with fine teeth., Adipose fin present (characteristic of salmonids)., Distinctive thyme-like scent when freshly caught (hence 'Thymallus')., Relatively large scales compared to other salmonids.

Pinna dorsale

Single, very large, high, and elongated, with 17-24 rays. Often brightly colored or spotted.

Pinna caudale

Forked, moderately sized.

Pinna pettorale

Relatively small, positioned low on the body.

Pinne distintive

Presence of an adipose fin between the dorsal and caudal fins.

Consigli per l'identificazione

1. 1

   Dorsal Fin

   The most striking feature is the exceptionally large, sail-like dorsal fin. In males, this fin is even more exaggerated and often displays vibrant coloration or distinct spotting patterns.

2. 2

   Adipose Fin

   Like other salmonids, the grayling possesses a small, fleshy adipose fin located between the dorsal and caudal fins.

3. 3

   Mouth

   Has a relatively small, terminal mouth with fine teeth, adapted for feeding on aquatic invertebrates.

4. 4

   Coloration

   Silvery-grey body with iridescent purple or blue hues, especially on the flanks. The back is darker, and the belly is white. The dorsal fin often has reddish or purplish spots or stripes.

5. 5

   Scent

   Freshly caught grayling often emit a distinct aroma reminiscent of wild thyme, which is the origin of its scientific name 'Thymallus'.

Esplora European Grayling