Atlantic Chub Mackerel Nasıl Tanınır?

Atlantic Chub Mackerel (Scomber colias) balığını tanımlamak için şu temel özelliklere bakın.

Fiziksel Özellikler

Vücut şekli

torpedo

Renklenme

Dorsal side is dark blue to greenish-blue, often with wavy, dark, irregular lines or spots. Flanks are silvery with a series of small, dusky spots or blotches, particularly below the lateral line. Ventral side is silvery-white.

Pul tipi

cycloid

Ağız konumu

terminal

Ayırt edici özellikler

Two widely separated dorsal fins., Five dorsal and five anal finlets behind the second dorsal and anal fins, respectively., Small, cycloid scales covering the entire body., A small swim bladder is present (unlike Scomber scombrus)., A series of small, dusky spots or blotches on the lower flanks, below the lateral line, which are often more prominent than in S. scombrus.

Sırt yüzgeci

Two distinct dorsal fins. The first dorsal fin has 9-10 spines. The second dorsal fin has 10-12 soft rays, followed by 5 finlets.

Kuyruk yüzgeci

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

Göğüs yüzgeci

Short, triangular pectoral fins, typically 18-21 rays.

Ayırt edici yüzgeçler

Five small finlets posterior to both the second dorsal and anal fins. Pelvic fins are thoracic.

Tanımlama İpuçları

1. 1

   Body Markings

   Look for the distinctive wavy, dark lines on the dorsal side and the series of small, dusky spots or blotches on the lower flanks, below the lateral line. These spots are a key differentiator from the Atlantic Mackerel (Scomber scombrus).

2. 2

   Swim Bladder

   Unlike Scomber scombrus, Scomber colias possesses a small swim bladder. This internal feature can be observed during dissection, though it's not a field identification characteristic.

3. 3

   Finlets

   The presence of five dorsal and five anal finlets is characteristic of all Scomber species, including S. colias.

4. 4

   Size

   Adults typically reach a fork length of 30-50 cm (12-20 inches), with a maximum recorded length of about 64 cm (25 inches) and a weight of up to 2.9 kg (6.4 lbs).

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