Kizurizuri ni samaki wa maji baridi wa nusufamilia Petrocephalinae katika familia Mormyridae na ngeli Actinopterygii (mapezi yenye mihimili) ambao wanatokea Afrika tu. Nusufamilia hii ina jenasi moja, Petrocephalus, yenye spishi 46. Spishi hizi hazina pua ndefu na mdomo wa chini ni mfupi, lakini zina ogani za umeme kama binamu katika nusufamilia Mormyrinae. Kwa hivyo ubongonyuma wao ni mkubwa pia na unatumia nishati nyingi (tazama domodomo). Petrocephalus catostoma, Kizurizuri wa Rovuma au Ntachi (Chuchill) Petrocephalus degeni, Kizurizuri wa Katonga (Katonga River mormyrid) Petrocephalus steindachneri, Kizurizuri wa Msola (Msola mormyrid) Petrocephalus stuhlmanni, Kizurizuri wa Kingani (Kingani mormyrid) Petrocephalus tanensis, Kizurizuri wa Tana au Kiawara (Tana River churchill) Rashid Anam & Edoardo Mostarda (2012) Field identification guide for the living marine resources of Kenya. FAO, Rome. Gabriella Bianchi (1985) Field guide to the commercial marine brackish-water species of Tanzania. FAO, Rome. Kizurizuri kwenye hifadhidata ya samaki