Which genus is *Anarrhichthys ocellatus* the sole recognized species within its lineage?
Answer
Anarrhichthys
The species *Anarrhichthys ocellatus* occupies a unique evolutionary position as the single, recognized species within the genus *Anarrhichthys*. This singular representation contrasts with other genera within the same family, such as *Anarhichas*. This isolation at the genus level suggests that *A. ocellatus* may have undergone a more significant or earlier evolutionary divergence from its closest relatives within the wolf fish lineage, leading to unique characteristics that merit its own distinct genus grouping, setting it apart even from its immediate family cousins.

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