Pristiophorus

Rarity: Common

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At a glance

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What Wikipedia says

Pristiophorus is a genus of sawsharks found in the Pacific, Atlantic and Indian oceans. Members of this genus differ from sixgill sawsharks of the genus Pliotrema in having five gill slits. Their rostral sawteeth lack prominent transverse ridges on the basal ledges, and the large teeth are not posteriorly serrated.

Excerpt from the Wikipedia article “Pristiophorus”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Illustrated Catalogue of the Fishes of South Australia, Adelaide, Australia : G. Hassell & Son, 1921, Public domain, via Wikimedia Commons.