Black roughscale catshark
The black roughscale catshark, Apristurus melanoasper, is a cat shark of the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Scyliorhinidae found in the northwest Atlantic slope at depths of between 510 and 1,520 m. Its length is up to 76 centimetres (29.9 in) 
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