A kimiyance ake kira Yanayin Poecilia, wannan kifin da aka sani da suna Molly, na dangin Poeciliidae ne, wanda ke zaune a yankin Mexico da Amurka. Gabaɗaya wannan nau'in yana zama ne cikin ƙungiyoyi, yawanci a cikin ruwa mai gudana waɗanda ke cikin motsi koyaushe.
Wadannan molly kifi, gabatar da dimorphism na jima'i, ma'ana, matan sunfi maza girma, masu auna tsakanin santimita 7 zuwa 11, yayin da da Molly da kyar ya kai santimita 5 a tsayi. Hakanan, ƙarshen ƙifin na kifin namiji ya bunkasa fiye da na mace kuma fincin ta na tsuliya ya zama gabobin haihuwarta.
Wadannan ƙananan ƙananan suna da alamun launuka daban-daban, ya danganta da nau'in, asali da jinsi. Daya daga cikin jinsin wadannan dabbobin shine melanik, ma’ana, sun cika baki. Kodayake yana da kyau kuma mai ban mamaki iri-iri, ya fi sauran hankali da kyau fiye da sauran, kuma yana buƙatar kulawa sosai tunda suna da saukin kamuwa da wasu cututtuka.
Idan kuna tunanin samun ɗayan waɗannan dabbobin a cikin akwatin kifaye, ya kamata ku sani cewa akwatin kifaye bai kamata ya sami wasu abubuwa na ado ko shuke-shuke da ke ɗauke da itace ba, tunda wannan yana sanya ruwa pH ya fadi kasa 7, wanda zai zama mai cutarwa da cutarwa ga dabbobi. Yana da mahimmanci ku tuna cewa a cikin akwatin kifaye wanda ke ɗauke da waɗannan dabbobi, dole ne ku sanya tsire-tsire waɗanda zasu iya tsayayya da kasancewar gishiri a cikin ruwa. Hakanan, yana da matukar mahimmanci ku tuna cewa yawan zafin ruwan da ke cikin tafkin ku, don kifin Molly ya bunkasa kuma ya rayu da kyau, dole ne ya kasance tsakanin 25 zuwa 28 digiri Celsius.