Come identificare Jacks, Pompanos, Trevallies, Scads

Per identificare Jacks, Pompanos, Trevallies, Scads (Carangidae), osserva queste caratteristiche chiave.

Caratteristiche fisiche

Forma del corpo

compressed

Colorazione

Highly variable, often silvery or iridescent, with some species exhibiting darker dorsal surfaces and lighter bellies. Many have yellow or golden fins, and some possess distinctive spots, bars, or patterns. Juveniles often have different color patterns than adults.

Tipo di squame

cycloid

Posizione della bocca

terminal

Caratteristiche distintive

Laterally compressed body, Forked caudal fin, Two dorsal fins (first spiny, second soft-rayed), Anal fin preceded by two detached spines (often embedded in adults), Scutes (enlarged, keeled scales) along the lateral line, especially on the caudal peduncle, Often possess an adipose eyelid

Pinna dorsale

Two dorsal fins; the first with 3-9 spines (often recessed in a groove), the second with 1 spine and 18-37 soft rays. The anterior rays of the second dorsal fin are often elongated.

Pinna caudale

Deeply forked caudal fin, indicative of fast-swimming pelagic habits.

Pinna pettorale

Long, falcate (sickle-shaped) pectoral fins, particularly in many larger species.

Pinne distintive

Anal fin similar in shape to the second dorsal fin, preceded by two detached spines (which may be absorbed or embedded in larger individuals). Pelvic fins are thoracic.

Consigli per l'identificazione

1. 1

   Body Shape

   Look for the characteristic laterally compressed, fusiform to ovate body shape.

2. 2

   Caudal Fin

   The deeply forked caudal fin is a key identifier for most Carangids, indicating their fast-swimming nature.

3. 3

   Scutes

   Presence of scutes (enlarged, often keeled scales) along the posterior part of the lateral line, especially on the caudal peduncle, is a definitive family characteristic. The number and extent of scutes vary by species.

4. 4

   Dorsal and Anal Fins

   Two dorsal fins (spiny and soft-rayed) and an anal fin preceded by two detached spines are consistent features. The shape and length of these fins can help differentiate genera and species.

5. 5

   Pectoral Fins

   Many species, particularly larger jacks and trevallies, have long, falcate pectoral fins.

Esplora Jacks, Pompanos, Trevallies, Scads