Painted hornshark - Heterodontus marshallae: Difference between revisions

Painted hornshark - Heterodontus marshallae (view source)

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 Heterodontus marshallae is a small species of hornshark, reaching a maximum length of about 60 cm. It has a robust body, a blunt head with prominent crests above the eyes, and a small mouth. It has two dorsal fins, each with a long spine in front, and an anal fin that is well separated from the caudal fin<ref name=":0" />. The caudal fin has a prominent lower lobe and a large terminal lobe. The pectoral and pelvic fins are large and triangular.
-The most distinctive feature of Heterodontus marshallae is its color pattern, which consists of 22 dark brown bands and saddles on a light greyish brown background<sup>3</sup>. The snout has a dark semicircular bar, usually bifurcated for most of its length, while the dorsal surface of the pectoral fin lacks a dark bar that is present in H. zebra.<ref name=":0" /> The bands and saddles are sometimes bifurcated or have additional medium brown bars or saddles between them.<ref name=":0" /> The tips of the dorsal fins and the apex of the terminal lobe of the caudal fin are usually blackish or dusky.
+The most distinctive feature of Heterodontus marshallae is its color pattern, which consists of 22 dark brown bands and saddles on a light greyish brown background. The snout has a dark semicircular bar, usually bifurcated for most of its length, while the dorsal surface of the pectoral fin lacks a dark bar that is present in H. zebra.<ref name=":0" /> The bands and saddles are sometimes bifurcated or have additional medium brown bars or saddles between them.<ref name=":0" /> The tips of the dorsal fins and the apex of the terminal lobe of the caudal fin are usually blackish or dusky.
 The teeth of Heterodontus marshallae show strong monognathic heterodonty, with pointed symphyseal and anterior teeth and molariform lateral teeth with a longitudinal keel. The dental formula is 20–22/17–19 (upper/lower). The dermal denticles are star-shaped, with anterior, posterior and two lateral protrusions that are ornamented with ridges<ref name=":0" />. The denticles vary in size and density along the body, being larger and denser dorsally than ventrally. The vertebral count is 106–112 total centra, 70–76 precaudal centra and 33–37 monospondylous centra<ref name=":0" />.