Babban mafarauci na Amur. Yana da kyawawa ganima ga masoya na aiki iri kamun kifi. Kifi mai ƙarfi da dabara. Ya kai girma a tsayi har zuwa mita 2, kuma yana auna kimanin kilo 40. Yellow-cheeked a waje, dan yayi kama da manyan kifin fari, amma ba shi da alaƙa da su. Kifin yana da ƙarfi sosai, wasu suna kwatanta shi da babban kifi. Wannan yana ƙara sha'awarta a matsayin " ganima".
A cikin kaka da hunturu yana tsayawa a tashar Amur, a lokacin rani yana shiga cikin tafki na ruwa don ciyarwa. Abincinsa ya ƙunshi yawancin kifin pelagic - ƙwanƙwasa, chebak, smelt, amma a cikin hanji kuma akwai kifin ƙasa - crucian carp, minnows. Yana canzawa zuwa ciyar da dabbobi da wuri, lokacin da ya kai tsayin daka kadan fiye da 3 cm. Yara kanana suna cin soya kifi. Yolk yana girma da sauri.
Habitat
A Rasha, kunci mai launin rawaya ya zama ruwan dare a tsakiya da ƙananan ƙananan Amur. Akwai bayanai game da kama wannan kifi a arewa maso yammacin Sakhalin. Babban wurin zama shine ramin tashar kogin. Yana can a mafi yawan lokuta. A cikin hunturu, ba ya ciyarwa, don haka babban kamun kifi na kifi mai launin rawaya yana faruwa a lokacin dumi. Siffar halayyar rawaya-ƙunci ita ce don farauta sau da yawa yana zuwa ƙananan wuraren tafki, inda ya "fattens".
Ciyarwa
Maza sun kai balaga a cikin shekaru 6-7 na rayuwa tare da tsawon kusan 60-70 cm kuma nauyin kusan 5 kg. Yana tasowa a cikin kogin, a cikin hanzari mai sauri, a cikin rabi na biyu na Yuni a yanayin zafi na 16-22 ° C. Kwai suna da haske, pelagic, dauke da halin yanzu, babba (diamita na kwai tare da harsashi ya kai 6-7 mm), a fili, an share shi a cikin sassa da yawa. Yawan haihuwa na mata ya kai daga 230 dubu 3,2 zuwa 6,8 miliyan qwai. Tsawon sabon hatched prelarvae shine 8 mm; canzawa zuwa matakin tsutsa yana faruwa a cikin shekaru 10-9 kwanaki tare da tsawon kusan XNUMX mm. Larvae suna haɓaka haƙoran ƙaho waɗanda ke taimakawa kama ganima ta hannu. An rarraba yara a cikin yankin bakin teku na bays na tsarin adnexal, inda suke fara ciyar da yara na sauran nau'in kifi. Yana da girma mai saurin gaske