How to Identify Combtooth Smooth-hound

To identify Combtooth Smooth-hound (Mustelus Hensis), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Dorsal surface typically uniform grey to reddish-brown, sometimes with faint darker spots or blotches, fading to a lighter grey or white on the ventral side. Juveniles may have more pronounced spotting.

Scale type

placoid

Mouth position

inferior

Distinctive features

Small, comb-like teeth arranged in pavement-like plates, lacking cusps., Slender body with a relatively short snout., Two dorsal fins of similar size, with the first dorsal fin originating over or slightly behind the pectoral fin insertions., Anal fin present and smaller than the second dorsal fin., Asymmetrical caudal fin with a well-developed ventral lobe.

Dorsal fin

Two dorsal fins, nearly equal in size. The first dorsal fin originates over or slightly behind the pectoral fin insertions. The second dorsal fin is positioned anterior to the anal fin.

Tail fin

Asymmetrical caudal fin with a distinct ventral lobe and a subterminal notch.

Pectoral fin

Moderately large and triangular.

Distinctive fins

Anal fin present, smaller than the second dorsal fin.

Identification Tips

1. 1

   Teeth

   Examine the teeth; they are small, blunt, and comb-like, forming a crushing pavement, rather than sharp, pointed teeth typical of many other sharks. This is the most definitive feature for 'Combtooth' smooth-hounds.

2. 2

   Dorsal Fins

   Note the two dorsal fins are of similar size, with the first dorsal fin originating over or slightly behind the pectoral fin insertions. This distinguishes it from some other smooth-hound species where the first dorsal might be more anterior.

3. 3

   Body Coloration

   Observe the uniform grey to reddish-brown dorsal coloration, often lacking prominent markings in adults, though juveniles may have faint spots.

4. 4

   Snout Shape

   The snout is relatively short and rounded.

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