How to Identify Atlantic Spadefish

To identify Atlantic Spadefish (Chaetodipterus faber), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

Adults typically have a silvery-gray body with 4-6 prominent, dark, vertical bands that fade with age. Juveniles have more distinct black and white banding. The fins are generally dusky or dark.

Scale type

ctenoid

Mouth position

terminal

Distinctive features

Deep, disc-shaped body, Small, protractile mouth, High, pointed dorsal and anal fins in juveniles, becoming more rounded with age, Often mistaken for angelfish due to body shape and banding

Dorsal fin

Single dorsal fin, deeply notched, with 9-11 spines and 19-24 soft rays. The spiny and soft-rayed portions are distinctly separated by a deep notch.

Tail fin

Forked caudal fin.

Pectoral fin

Small, rounded pectoral fins.

Distinctive fins

The anterior rays of the soft dorsal and anal fins are elongated, giving a pointed appearance, especially in younger individuals. These fins become more rounded and less elongated in older, larger specimens.

Identification Tips

1. 1

   Body Shape

   Look for the very deep, compressed, and disc-like body, almost circular in profile.

2. 2

   Banding Pattern

   Observe the 4-6 dark vertical bands on a silvery-gray body. Note that these bands become less distinct and may fade in larger, older individuals.

3. 3

   Dorsal and Anal Fins

   Identify the deeply notched dorsal fin, separating the spiny and soft-rayed portions. The soft dorsal and anal fins are often elongated and pointed in juveniles.

4. 4

   Mouth

   The mouth is small and protractile, adapted for picking small invertebrates.

5. 5

   Schooling Behavior

   Spadefish are often seen in large, dense schools, especially around structures.

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