Come identificare Albacore Tuna

Per identificare Albacore Tuna (Thunnus alalunga), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

torpedo

Colorazione

Dark metallic blue to black on the dorsal side, fading to silvery-white on the flanks and belly. The first dorsal fin is deep yellow, the second dorsal and anal fins are light yellow, and the finlets are dark.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Exceptionally long pectoral fins, typically extending beyond the origin of the second dorsal fin, sometimes reaching past the anal finlets., Small, conical teeth., Relatively large eyes compared to other tuna species., Seven to nine dorsal finlets and seven to eight anal finlets.

Pinna dorsale

Two dorsal fins; the first is spiny and triangular, the second is soft-rayed and similar in shape but smaller. Followed by 7-9 finlets.

Pinna caudale

Deeply forked caudal fin (lunate), characteristic of fast-swimming pelagic fish.

Pinna pettorale

Unusually long, extending well past the origin of the second dorsal fin, often reaching the anal finlets.

Pinne distintive

The elongated pectoral fins are the most distinctive feature, setting it apart from other Thunnus species.

Consigli per l'identificazione

1. 1

   Pectoral Fin Length

   The most reliable identifier: the pectoral fin is remarkably long, extending past the second dorsal fin origin, often reaching the anal finlets. No other tuna species has pectoral fins this long relative to body size.

2. 2

   Coloration

   Dark metallic blue back, silvery-white belly. The first dorsal fin is distinctly yellow, and the second dorsal and anal fins are light yellow.

3. 3

   Body Shape

   Typical fusiform (torpedo-shaped) tuna body, but often appears more slender than some other tuna species.

4. 4

   Eyes

   Relatively large eyes compared to other tuna, which is an adaptation for hunting in deeper, dimmer waters.

Esplora Albacore Tuna