Miten tunnistaa Greater Amberjack

Tunnistaaksesi lajin Greater Amberjack (Seriola dumerili), tarkista nämä keskeiset piirteet.

Fyysiset ominaisuudet

Ruumiinmuoto

torpedo

Väritys

Dorsal side is typically dark blue to bluish-gray, fading to silvery-white on the belly. A distinctive amber or yellowish stripe often runs horizontally from the eye to the base of the caudal fin, though this can be faint or absent in very large individuals. Juveniles have prominent vertical bars and a dark stripe through the eye.

Suomutyyppi

cycloid

Suun asento

terminal

Erottuvat piirteet

Robust, elongated, and slightly compressed body., A dark amber or yellowish stripe from the snout through the eye to the first dorsal fin (more pronounced in juveniles and sub-adults)., Two dorsal fins, the first much shorter than the second., A small, detached finlet often present behind the second dorsal and anal fins (though not always prominent)., Strongly forked caudal fin., Absence of scutes along the lateral line, unlike some other carangids.

Selkäevä

Two dorsal fins; the first with 7-8 spines, the second with 1 spine and 29-35 soft rays. The anterior rays of the second dorsal fin are notably elevated.

Pyrstöevä

Strongly forked, with pointed lobes.

Rintaevä

Relatively short, falcate (sickle-shaped).

Erottuvat evät

Anal fin similar in shape to the second dorsal fin, with 2 detached spines followed by 1 spine and 18-22 soft rays. Pelvic fins are well-developed.

Tunnistusvinkit

1. 1

   Body Shape and Coloration

   Look for the robust, torpedo-shaped body, dark blue/gray dorsal, silvery belly, and the characteristic amber stripe from snout to dorsal fin (though variable in intensity).

2. 2

   Dorsal Fins

   Note the two dorsal fins, with the first being much shorter and the second having a distinctly elevated anterior lobe.

3. 3

   Lateral Line

   Absence of prominent scutes along the lateral line, which distinguishes it from some other jack species.

4. 4

   Juvenile Markings

   Juveniles have distinct vertical bars on their flanks and a dark stripe through the eye, which fade with age.

Tutustu lajiin Greater Amberjack