Arabian catshark
The Arabian catshark, Bythaelurus alcockii, 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. It grows up to 30 centimetres (11.8 in) long, and lives in open seas. It is only known from a single specimen, which is now lost.
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