Tekun wani ruwa ne wanda ya taso a dabi'ance, an cika shi da ruwa a cikin tsauraran matakai, kuma a lokaci guda ba shi da wata alaƙa da teku ko teku. Akwai tabkuna kusan miliyan biyar a duniya. Yanayin rayuwa a cikinsu ya bambanta da na teku, misali, a mafi yawan lokuta ruwan tafki sabo ne.
Kifi a nan ya dace, kifin lake. Ana kuma kiran su da kogi, tunda ana samun irin wannan nau'in a cikin sabbin koguna. Ofayan manyan bambance-bambance shine ƙarami kaɗan, kwarangwal mai haɓaka da rashi adadin adadi mai yawa. Bari muyi la'akari da mafi yawan wakilai na kifin kifi.
Omul
Golomyanka
Mai zurfin fadi
Grey
Farin kifi
Baikal sturgeon
Taimen
Burbot
Lenok
Perch
Ide
Soroga
Arctic char
Pike
Kuka
Sauran kifayen tabkuna
Siberian dace
Minnow
Siberian roach
Gudgeon
Irin kifi
Tench
Amur kifi
Kifin Amur
Siberiya spiny
Rotan
Yellowfly
Volkhov farin kifi
Atlantic sturgeon
Zander
Rudd
Kuraje
Chub
Sterlet
Palia
Asp
Chekhon
Loach
Ruff
Ji
Guster
Kifi
Kyauta
Ripus
Amur
Bass
Bersh
Verkhovka
Skygazer
Irin kifi
Chum
Sickleback
Zheltochek
Kaluga
Gwanin launin ruwan kasa
Malma
Lamprey
Muksun
Navaga
Nelma
Jayen kifin
Peled
Caarfin Scaffold
Podust
Kifin allura
Kifi
Katifan Azurfa
Tugun
Ukleya
Barbel
Chebak
Chir
Chukuchan
Kammalawa
Yawancin kifin lake suna da "na gargajiya" kuma suna kama da juna. Suna da alaƙa da `` launi iri ɗaya, wuri da fasalin fincin, yanayin motsi a cikin ruwa. Daga cikinsu akwai nau'ikan da suka yi fice daga saura. Waɗannan sun haɗa da, da farko, sassaka, kifin mai tsini, Dolly Varden char, kifi mai ruwan kasa, rotan da kuma sikancin Siberia.
Rayuwa a cikin tabki yana sanya halaye daban-daban akan halayyar kifaye da iyawar su. Misali, rotan yana iya zama a cikin ruwa mara zurfin gaske, wanda yake daskarewa zuwa gindin hunturu. A lokaci guda, ba ya mutuwa, amma ya ɓace cikin garken tumaki ya daskare cikin kankara. A lokacin bazara, idan tabki ya narke, mai bacci Amur yana fitowa daga bacci sai yaci gaba da rayuwarsa ta yau da kullun.
Ya bambanta da '' yan'uwan '' teku '' na cikin ƙauyen ba sa yin doguwar ƙaura don haihuwa. Kodayake wasu nau'ikan suna iya shiga tashoshin rafuka masu gudana. Trout shine babban mai son yin iyo a saman ruwa.
An kama yawancin kifaye na tabki. Yawanci ana hana kamun kifi a kan tabkuna saboda ƙarancin dabbobi. Amma masunta marasa aure suna kama kifi da sanda da sauran na'urori. A wasu sassan duniya, kifi daga tabki da makamantan magudanan ruwa sune asalin abincin mazaunan yankin.
