How to Identify Silver Sweep

To identify Silver Sweep (Scorpis lineolatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery-grey to silvery-white body, often with several faint, narrow, dusky longitudinal lines along the flanks. Fins are typically dusky or translucent. Juveniles may exhibit more prominent dark markings.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deeply forked caudal fin, Small, terminal mouth, Large eyes, Relatively deep body

Dorsal fin

Single dorsal fin with 10-11 spines and 26-28 soft rays. The spinous and soft-rayed portions are continuous, with the soft-rayed portion being significantly longer.

Tail fin

Deeply forked, with pointed lobes.

Pectoral fin

Moderately long and pointed.

Distinctive fins

Anal fin with 3 spines and 26-28 soft rays, similar in shape and length to the soft-rayed portion of the dorsal fin. Pelvic fins are small and located thoracically.

Identification Tips

1. 1

   Body Coloration

   Look for the characteristic silvery body with faint longitudinal lines. The intensity of these lines can vary.

2. 2

   Caudal Fin

   The deeply forked tail is a key identifier, distinguishing it from some other reef fish.

3. 3

   Schooling Behavior

   Silver Sweeps are almost always seen in schools, often numbering in the hundreds or thousands, especially around structures.

4. 4

   Dorsal and Anal Fins

   Note the continuous dorsal fin with a longer soft-rayed portion and the similarly shaped anal fin.

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