Izinhlanzi nezinye izilwane zasemanzini zakha iqembu elikhulu lezilwane ezibulawelwa ukudla, nokho ngokuvamile yizo ezinganakwa kakhulu. Izigidigidi ziyabanjwa noma zilinywe unyaka ngamunye, ezedlula kude izinombolo zezilwane zasemhlabeni ezixhashazwayo kwezolimo. Naphezu kobufakazi obandayo besayensi bokuthi izinhlanzi zizwa ubuhlungu, ukucindezeleka, nokwesaba, ukuhlupheka kwazo akunakwa noma azinakwa. I-Industrial aquaculture, evame ukubizwa ngokuthi ukufuywa kwezinhlanzi, ifaka izinhlanzi ezibayeni noma emakhejini aminyene lapho izifo, ama-parasites, nezinga eliphansi lamanzi lidlangile. Izinga lokufa liphezulu, futhi labo abasindayo babekezelela izimpilo zokuvalelwa, bencishwa ikhono lokubhukuda ngokukhululeka noma ukuveza ukuziphatha kwemvelo.
Izindlela ezisetshenziswayo ukubamba kanye nokubulala izilwane zasemanzini ngokuvamile zinonya ngokwedlulele futhi zithatha isikhathi eside. Izinhlanzi ezibanjiwe zasendle zingase ziminyaniswe kancane ezitezini, zichotshozwe ngaphansi kwamanetha asindayo, noma zife ngenxa yokuwohloka njengoba zidonswa emanzini ajulile. Izinhlanzi ezifuywayo zivame ukuhlatshwa ngaphandle kokumangalisa, zishiywe ukuze ziphefumule emoyeni noma eqhweni. Ngaphandle kwezinhlanzi, izigidigidi zama-crustaceans nama-mollusk—njengezimfanzi, izinkalankala, nezingwane—nazo zingenwa imikhuba ebangela ubuhlungu obukhulu, naphezu kokuqashelwa okwandayo kwemizwa yazo.
Umthelela wemvelo wokudotshwa kwezimboni kanye nokufuywa kwezilwane zasemanzini ulimaza ngokufanayo. Ukudoba ngokweqile kusongela zonke izimiso zemvelo, kuyilapho amapulazi ezinhlanzi anengxenye ekungcoleni kwamanzi, ekucekeleni phansi kwezindawo ezihlala kuzo, nasekusakazekeni kwezifo kubantu basendle. Ngokuhlola usizi lwezinhlanzi nezilwane zasemanzini, lesi sigaba sinikeza ukukhanya ezindlekweni ezifihlekile zokusetshenziswa kwezilwane zasolwandle, sikhuthaza ukucatshangelwa ngokujulile kwemiphumela yokuziphatha, imvelo, kanye nezempilo yokuphatha lezi zidalwa ezizwelayo njengemithombo engasetshenziswa.
Izigidi zezidalwa zasolwandle zibhajwe emjikelezweni wokuhlupheka embonini eyandayo ye-aquaciulture, lapho izimo eziningi kakhulu futhi zinganaki inhlala-kahle yazo. Njengoba ukufunwa kwasolwandle kukhula, izindleko ezifihliwe - izinkinga zokuziphatha okuhle, ukonakaliswa kwemvelo kanye nemithelela yezenhlalo - ziya ngokuya zibonakalayo. Lo mbhalo usikhanyisela ngokoqobo okunzima okubhekene nempilo yasolwandle engozini, kusuka ezindabeni zempilo yomzimba ekucindezelekeni kwengqondo, ngenkathi kufonela ushintsho olunenjongo ukudala i-aquaculture futhi eqhubekayo ye-aquaculture
