Come identificare Alfonsino

Per identificare Alfonsino (Beryx decadactylus), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

compressed

Colorazione

Bright red to reddish-orange dorsally, fading to pinkish-silver ventrally. Fins are typically reddish.

Tipo di squame

ctenoid

Posizione della bocca

terminal

Caratteristiche distintive

Large, prominent eyes, adapted for low light conditions in deep water., Deep, compressed body., Large, rough scales., A single dorsal fin with strong spines., Forked caudal fin.

Pinna dorsale

Single dorsal fin with IV-V strong spines followed by 13-16 soft rays. The spiny portion is relatively short.

Pinna caudale

Deeply forked caudal fin, with pointed lobes.

Pinna pettorale

Long and pointed, typically with 16-18 rays.

Pinne distintive

Pelvic fins are thoracic, with I spine and 9-10 soft rays, often reaching beyond the anus. Anal fin has IV spines and 26-30 soft rays.

Consigli per l'identificazione

1. 1

   Coloration

   Its vibrant red to reddish-orange body is a key identifier, especially when freshly caught.

2. 2

   Eye Size

   The exceptionally large eyes are characteristic of deep-sea fish and are very prominent in Alfonsino.

3. 3

   Body Shape

   The deep, laterally compressed body distinguishes it from many other deep-water species.

4. 4

   Fin Ray Counts

   Precise counts of fin rays (D IV-V, 13-16; A IV, 26-30; P 16-18; V I, 9-10) are definitive for species identification, especially when differentiating from closely related Beryx species.

5. 5

   Scales

   The large, rough, ctenoid scales are noticeable upon close inspection.

Esplora Alfonsino