How to Identify Draughtboard Shark

To identify Draughtboard Shark (Cephaloscyllium laticeps), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface is typically light brown to grey, covered with a distinctive pattern of dark brown to black blotches and saddles, often resembling a chessboard or 'draughtboard' pattern. The ventral surface is pale white or yellowish. Some individuals may have small, scattered white spots.

Scale type

placoid

Mouth position

subterminal

Distinctive features

Broad, flattened head with a short, rounded snout., Large, cat-like eyes with nictitating membranes., Prominent nasal barbels., Ability to inflate its body with water or air when threatened., Two dorsal fins, the first originating over or slightly behind the pelvic fin origins., Rough skin due to placoid scales.

Dorsal fin

Two relatively small dorsal fins, without spines. The first dorsal fin is positioned well back on the body, originating over or slightly behind the pelvic fin origins. The second dorsal fin is smaller than the first.

Tail fin

Caudal fin is relatively short and broad, with a distinct ventral lobe and a subterminal notch.

Pectoral fin

Large and broad pectoral fins.

Distinctive fins

Pelvic fins are relatively small. All fins are unspined.

Identification Tips

1. 1

   Coloration and Pattern

   Look for the distinctive 'draughtboard' pattern of dark blotches and saddles on a lighter background. This is the most reliable visual identifier.

2. 2

   Head Shape

   Note the broad, flattened head and short, rounded snout, characteristic of swellsharks.

3. 3

   Dorsal Fin Position

   The first dorsal fin originates over or slightly behind the pelvic fin origins, which helps distinguish it from some other catshark species.

4. 4

   Inflation Ability

   If observed in distress or handled, its ability to inflate its body is a key characteristic of the genus Cephaloscyllium.

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