Ka taƙaita labarin:  Ana zubar da kifin akwatin kifaye a cikin koguna inda suke lalata yanayin halittu na musamman ta hanyar girma har sau ashirin na girman su na yau da kullun. Ana kama kifin zinare mai nauyin kilo 2 da koi carp har zuwa kilo 8 da tsawon mita daya, a cikin hanyoyin ruwa na Yammacin Ostiraliya tare da sauran nau'ikan da aka shigo da su. 'Yawancin wadannan kifayen sun fi na 'yan asalin girma, don haka suna farautarsu kuma suna gasa don mazaunin su,' in ji Dokta David Morgan, Daraktan Cibiyar Nazarin Kifi da Kifi a Jami'ar Murdoch, ga Daily Mail Australia. Gungura ƙasa don bidiyo. Kifin zinare (wanda aka nuna a hoto) mai nauyin kilo 2 wasu daga cikin kifayen akwatin kifaye ne masu mamayewa da lalata hanyoyin ruwa na WA. Koi carp (hoton) mai nauyin kilo 8 kuma tsawonsa ya kai mita daya shi ne wani daga cikin kwari 13 da aka shigo da su. Kifi na asali a yankin, kamar wannan Pygmy Perch na Balston wanda aka kai wa hari, ya kai 10cm kawai. 'Kayan kifinmu na asali ba su kai 10cm a tsayi kamar pygmy perch ko minnows na asali. 'A kudu maso yammacin Yammacin Ostiraliya kashi 90 cikin 100 na kifi da kashi 100 na crayfish ana samun su ne kawai a can, don haka koguna mafaka ne ga kifin na gida kuma idan aka tilasta musu su kasance tare da nau'ikan da aka shigo da su, ba sa yin kyau sosai.' Ban da cin kifin da ke yankin da kuma kwashe gidajensu, irin waɗannan da aka shigo da su suna kawo ƙwayoyin cuta da cututtuka da ba su saba ba. 'A Perth mun san da 'yan kwari biyu. Ɗaya daga cikinsu yana da lahani sosai ga kifin da ke wurin, shi ne ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙwarƙwarar ƙ An cire wani babban kogin Murray River Cod daga wani wuri mai ruwa na Perth a watan Nuwambar bara: 'Da yawa daga cikin wadannan kifayen sun fi girma fiye da kifayen da ke cikin gida, don haka suna farautar su kuma suna gasa don mazauni,' in ji Dokta David Morgan, Daraktan Cibiyar Kifi da Binciken Kifi a Jami'ar Murdoch. Carp masu cutarwa: 'A kudu maso yammacin Yammacin Ostiraliya kashi 90 cikin 100 na kifi da kashi 100 cikin 100 na crayfish ana samun su ne kawai...
Ana zubar da kifayen akwatin kifaye a kogunan Yammacin Ostiraliya ta masu mallakar dabbobi. Kifi na zinariya yana girma daga 100g na yau da kullun zuwa 2kg da koi carp zuwa 8kg. Dabbobi masu ban sha'awa suna gasa tare da kifi mai tsawon 10cm don abinci da mazauni. Suna kuma gabatar da cututtuka da cututtuka masu lalacewa a kan jinsunan gida.