Izichiyosaku
Izichiyosaku, isigaba amalungu aso aziwa ngokuthi izinhlanzi ezinamafindo noma ezomchiyosaku, uhlobo lwezinhlanzi ezinamathambo [1] ezakha cishe amaphesnti angama-99 wezinhlobo zezinhlanzi ezingaphezu kwezi-30,000 eziphilayo. Iningi lezinhlobo zomchiyosaku ezikhona zingama -teleost, futhi ngokwenani lezinhlobo zibusa i- subphylum Vertebrata, equkethe ngaphezu kwamaphesneti angama-50 wazo zonke izilwane eziphilayo ezinethambo lomgogodla. Ziyizilwane zasemanzini ezitholakala emanzini amaningi futhi zitholakala kuyo yonke indawo emanzini ahlanzekile, angenasawoti kanye nasolwandle kusukela olwandle olujulile kuya emanzini angaphansi komhlaba kuya emifuleni ephakeme kakhulu yezintaba .