How to Identify Striped Ponyfish

To identify Striped Ponyfish (Equulites lineolatus), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Silvery, often with a darker dorsal surface and lighter ventral side. Distinctive dark, wavy, horizontal lines or stripes are present on the upper flanks, which can be more prominent in some individuals or under certain conditions. Fins are typically hyaline (clear) to dusky.

Scale type

cycloid

Mouth position

superior

Distinctive features

Highly compressed, deep body, Extremely protractile mouth, forming a downward-pointing tube when extended, Small, cycloid scales, Distinctive wavy horizontal lines on upper flanks, Large eyes

Dorsal fin

Single dorsal fin with 8 spines and 16-17 soft rays. The spines are relatively weak.

Tail fin

Forked caudal fin.

Pectoral fin

Pectoral fins are moderately long.

Distinctive fins

Pelvic fins are small and located thoracically.

Identification Tips

1. 1

   Body Shape

   Look for a very thin, disc-like body that is much deeper than it is wide.

2. 2

   Mouth

   Observe the highly protractile mouth that can extend downwards into a tube-like structure for feeding.

3. 3

   Coloration and Markings

   Identify the silvery body with characteristic dark, wavy horizontal lines on the upper half of the body. These lines are key to distinguishing it from other ponyfish species.

4. 4

   Habitat

   Often found in schools over sandy or muddy bottoms in shallow coastal waters and estuaries.

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