How to Identify Australian Pilchard

To identify Australian Pilchard (Sardinops sagax), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Dorsal surface iridescent blue-green, flanks silvery, ventral surface white. Often has a series of distinct dark spots (typically 1-8, but can be absent or more numerous) along the mid-lateral line, especially prominent after capture.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Elongated, fusiform body, Large, easily shed scales, Single, relatively short dorsal fin, Ventral fins located below the dorsal fin origin, Absence of lateral line pores on the body (sensory canals are internal), A series of dark spots along the flank (variable)

Dorsal fin

Single, short-based, located approximately midway along the body. Typically 16-21 soft rays.

Tail fin

Deeply forked, symmetrical lobes, indicative of a fast-swimming pelagic species.

Pectoral fin

Relatively small, low-set, with 15-18 soft rays.

Distinctive fins

Pelvic fins are small and located abdominally, below the anterior part of the dorsal fin. Anal fin is short, located far back on the body, with 13-19 soft rays.

Identification Tips

1. 1

   Body Shape and Coloration

   Look for the streamlined, silvery body with an iridescent blue-green back. The presence of dark spots along the flank is a key indicator, though their number and prominence can vary.

2. 2

   Fin Placement

   Note the single dorsal fin positioned centrally, and the small pelvic fins located directly beneath or slightly anterior to the dorsal fin's origin.

3. 3

   Scales

   The scales are relatively large and tend to shed easily upon handling, a common characteristic of clupeids.

4. 4

   Size

   Adults typically range from 15-25 cm (6-10 inches) in standard length, with a maximum recorded length of about 30 cm (12 inches).

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