I-Los Inhlanzi yommese, Eyaziwa nangokuthi i-Apteronotus Leptorhynchus, ziyizinhlobo zomndeni wakwa-Apteronotidae, futhi ezizalwa emifuleni nasemachibini ezwekazi laseNingizimu Melika. Yize igama labo liyinhlanzi yommese, abaningi babazi njengesipoki esimnyama, futhi banemfashini kakhulu iminyaka ethile, ngakho-ke kuzoba lula kakhulu ukuthola ezitolo ezikhethekile zezilwane ezifuywayo.
Lezi zilwane zibonakala ngokuba nomzimba omnyama onemigqa emhlophe ekugcineni komzimba wazo, kodwa isimo sazo esijwayelekile esenza lezi zinhlanzi ezincane zikhange kakhulu. Ngendlela efanayo, kunokuthula impela yize kuzoba yisihluku Umzingeli wezinambuzane ezincane.
Kubalulekile ukuthi wazi ukuthi lezi zilwane zingalinganisa kuze kube ngamasentimitha angama-50 ubude, zikwenze kube yinhlanzi engakulungele ngokuphelele ukuba nayo kwi-aquarium yasekhaya, ngaphandle kokuthi unedamu elikhulu ngokwanele ukuthi ungaligcina lapho, yize ngincoma anginazo ekhaya kepha kunalokho ezikhungweni zombukiso naku- ama-zoo. Ngendlela efanayo, lezi zilwane azihlangene kakhulu nomphakathi, ngakho-ke kungakuhle ukuthi kugcinwe isampula eyodwa yezinhlobo ukugwema izinkinga zomhlaba.
I-aquarium elungile yalezi zilwane kuzoba cishe amalitha angama-30 amanzi, lapho esemncane, ngenkathi esekhulile, sizodinga okungenani eyodwa yamalitha angama-55. Ungakhohlwa ukuthi lezi zinhlanzi ziyadla izibungu zezinambuzane, enama-crustaceans amancane, ukudla okomile ngisho nezikelemu ezincane.