Come identificare Brook Trout

Per identificare Brook Trout (Salvelinus fontinalis), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Dorsal surface dark green to brown with distinctive worm-like (vermiculated) markings. Sides are lighter, often with scattered red spots, many of which are surrounded by blue halos. Ventral surface is white to reddish-orange, especially during spawning. Lower fins (pelvic, anal, caudal) have a distinctive white leading edge, followed by a black stripe, and then reddish-orange.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Worm-like vermiculations on back and dorsal fin, Red spots with blue halos on flanks, White leading edge on lower fins (pelvic, anal, caudal) followed by a black stripe, Adipose fin present

Pinna dorsale

Single, relatively short dorsal fin with 10-14 rays, often with vermiculations.

Pinna caudale

Slightly forked to square (hence 'Squaretail'), especially in younger fish. Becomes more square with age.

Pinna pettorale

Paired, located just behind the operculum.

Pinne distintive

Adipose fin present, characteristic of salmonids. Pelvic and anal fins have a prominent white leading edge, followed by a black stripe.

Consigli per l'identificazione

1. 1

   Coloration and Markings

   Look for the distinctive worm-like (vermiculated) patterns on the back and dorsal fin, and the red spots with blue halos on the sides. The white leading edge on the lower fins is a key identifier.

2. 2

   Tail Shape

   The tail is typically square or only slightly forked, especially in comparison to other trout species.

3. 3

   Adipose Fin

   Presence of a small, fleshy adipose fin between the dorsal and caudal fins confirms it as a salmonid.

4. 4

   Absence of Black Spots

   Unlike many true trout (e.g., Rainbow Trout, Brown Trout), Brook Trout typically lack prominent black spots on their body or fins.

Esplora Brook Trout