Kalmar "Genus Anarhichas" tana nufin rabe-raben haraji a ilmin halitta. Musamman, sunan jinsin ƙungiyar kifaye da aka fi sani da wolffishes, waɗanda ke cikin dangin Anarhichadidae. Ana samun waɗannan kifayen galibi a cikin ruwan sanyi na Arewacin Hemisphere kuma suna da doguwar siffa mai kama da siffa. Halin halittar Anarhichas ya ƙunshi nau'ikan wolffish da yawa, gami da wolffish na Atlantika (Anarhichas lupus) da kuma ƙoƙon da aka hange (Anarhichas qananan).