How to Identify Reef Stonefish

To identify Reef Stonefish (Synanceia verrucosa), look at these key features.

Physical Characteristics

Body shape

flat

Coloration

Highly variable, ranging from dull grey, brown, green, or reddish, often mottled with patches of other colors. This coloration, combined with its warty skin, provides exceptional camouflage against coral, rocks, and rubble. Often covered in algae and detritus, further enhancing its disguise.

Scale type

none

Mouth position

superior

Distinctive features

Large, upward-pointing mouth, Bulbous, warty body covered in dermal flaps and tubercles, Eyes positioned high on the head, often obscured by skin flaps, 13 stout, venomous dorsal fin spines, each with two venom glands at the base, Pectoral fins are large and fan-like, often used for support on the substrate, Absence of scales, skin is thick and leathery

Dorsal fin

13 stout, venomous spines followed by 5-7 soft rays. The spines are thick and rigid, capable of penetrating footwear.

Tail fin

Rounded, often blending with the body contour.

Pectoral fin

Large, broad, and fan-like, often used to prop the fish up on the substrate.

Distinctive fins

Pelvic fins are thoracic, with 1 spine and 5 soft rays. Anal fin has 2-3 spines and 5-7 soft rays.

Identification Tips

1. 1

   Camouflage

   Its primary identification feature is its incredible ability to blend in with its surroundings. Look for an irregularly shaped 'rock' that seems out of place or has eyes.

2. 2

   Body Shape and Texture

   Warty, lumpy, and often covered in dermal flaps, resembling a piece of coral or rock. It lacks typical fish scales.

3. 3

   Mouth and Eyes

   Possesses a large, upturned mouth and small, upward-pointing eyes that are often difficult to discern amidst its camouflaged head.

4. 4

   Dorsal Fin Spines

   If visible, the presence of 13 thick, rigid dorsal fin spines is a key indicator. These spines are often held erect when threatened.

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