How to Identify Warty Frogfish

To identify Warty Frogfish (Antennarius maculatus), look at these key features.

Physical Characteristics

Body shape

rounded

Coloration

Highly variable, ranging from white, yellow, orange, red, brown, to black, often mottled or spotted to match their environment. They can change color over days or weeks to better blend in. Typically covered in dark spots or blotches, giving rise to the 'maculatus' (spotted) epithet.

Scale type

none

Mouth position

superior

Distinctive features

Globose, highly compressed body, Skin covered in numerous dermal appendages (warts, filaments, and fleshy protuberances) that aid in camouflage, Large, upward-pointing mouth, Prominent illicium (fishing rod-like first dorsal spine) with a distinct esca (lure) at its tip, Pectoral fins are limb-like and used for 'walking' on the substrate

Dorsal fin

Three separate dorsal spines. The first is modified into the illicium and esca. The second and third are free and covered in skin. A soft-rayed dorsal fin is present posteriorly.

Tail fin

Rounded caudal fin, often obscured by skin and dermal appendages.

Pectoral fin

Large, limb-like, and highly mobile, used for propulsion and 'walking' along the bottom.

Distinctive fins

Pelvic fins are jugular (located anterior to the pectoral fins) and small.

Identification Tips

1. 1

   Illicium and Esca

   The illicium (fishing rod) is relatively long, often banded, and the esca (lure) is typically a complex, irregular tuft of fleshy appendages resembling a small shrimp or worm. This is a key differentiator from other frogfish species.

2. 2

   Dermal Appendages

   The skin is densely covered with prominent, wart-like protuberances and fleshy filaments, giving it a very rough, 'warty' appearance. The density and shape of these appendages can vary.

3. 3

   Coloration and Pattern

   While highly variable, the presence of distinct dark spots or blotches on a lighter background is characteristic. The ability to change color rapidly is also a strong indicator.

4. 4

   Body Shape

   Its distinctly globose and compressed body, combined with the limb-like pectoral fins, is typical of frogfish.

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