Come identificare Southern Pollock

Per identificare Southern Pollock (Pollachius australis), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Dorsal side typically dark greenish-brown to olive, fading to silvery-white on the flanks and belly. Fins are generally dusky. Some individuals may exhibit faint mottling or darker blotches.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Three distinct dorsal fins, well-separated., Two distinct anal fins, the first being longer than the second., A prominent, continuous lateral line that is typically straight or slightly curved., Absence of a barbel on the chin (a key differentiator from true cods and some hakes)., Large eyes relative to head size.

Pinna dorsale

Three dorsal fins: D1 (12-15 rays), D2 (18-22 rays), D3 (17-20 rays). All are soft-rayed.

Pinna caudale

Caudal fin is emarginate to slightly forked, with 20-24 rays.

Pinna pettorale

Pectoral fins are moderately sized, located just behind the operculum, with 18-20 rays.

Pinne distintive

Pelvic fins are thoracic, positioned anterior to the pectoral fins, with 6-7 rays. The first anal fin is significantly longer than the second.

Consigli per l'identificazione

1. 1

   Dorsal Fins

   Count three distinct dorsal fins. This immediately distinguishes it from species with one or two dorsal fins.

2. 2

   Anal Fins

   Observe two distinct anal fins, with the first being noticeably longer than the second.

3. 3

   Chin Barbel

   Check for the absence of a barbel on the chin. This is a crucial feature to differentiate it from true cods (Gadus spp.) and some hakes (Merluccius spp.).

4. 4

   Lateral Line

   Note the prominent, usually straight or slightly curved lateral line along the body.

5. 5

   Body Shape and Coloration

   Its torpedo-shaped body and dark greenish-brown dorsal coloration fading to silvery-white are characteristic.

Esplora Southern Pollock