Kalmar "Genus Ictalurus" tana nufin rabe-raben haraji wanda ya haɗa da rukuni na nau'in kifin kifi na ruwa na asali a Arewacin Amirka. Musamman, jinsin Ictalurus na cikin iyalin Ictaluridae ne, wanda ke da alaƙa da kasancewar ƙashin ƙashi da ake kira "adipose fin" a bayan kifi. Halin jinsin Ictalurus ya ƙunshi nau'ikan kifin kifi da yawa, kamar tashar catfish (Ictalurus punctatus) da kuma shuɗin kifi (Ictalurus furcatus).