Podust ntses. Leej twg yog nws?

Nyob rau hauv lub Upper thiab qis nce mus txog ntawm cov dej ntws nrog ib tug leisurely chav kawm ntawm ib txwm undermouth. Ntses nyob rau hauv qhov chaw sib txawv yog muaj npe txawv, tab sis "Blackbelly" los yog "chernopuzom" feem ntau nws lub npe vim hais tias ntawm lub sawb, uas yog zoo li ib tug dub zaj duab xis kis nyob rau hauv tag nrho cov-bellied creatures. Cov hom txau rau tsob nroj khoom noj khoom haus (tab sis tsis yog tsis kam, thiab los ntawm me me crustaceans), tab sis tsis ua li ntawd, raws li "herbivorous" kablaum lossis bream. Ntses undermouth hlub mus pub rau nyob ze ntawm lub pas nrig txaus los nyob rau hauv lub pits, qhov twg settles ib tug ntau ntawm txawv zaub mov. Seasoned neeg nuv ntses cam hais tias chernopuza yuav pom ze ntawm lub av nplaum precipices, qhov twg nws yog zoo-pub nyom thiab me me dej dwellers. Tej zaum qhov no yog vim li cas Podust lub qhov ncauj zoo li ib tug txoj kab txiav, slotted tshaj lub cartilaginous phaj ntawm lub mandible.

Ib txhia fishermen ntseeg tau hais tias undermouth - ntses (yees duab nyob rau hauv pem hauv ntej ntawm koj), uas yog heev uas zoo sib xws rau vimba, thaum lwm tus neeg taw tes rau nws cov kev zoo sib thooj rau cov dace. Qhov siab tshaj plaws ntev ntawm lub tshem me me tsis pub tshaj 35 centimeters, tab sis lub kab nuv ntses ntau zaus tuaj nyob piv txwv ntawm ib tug ntev ntawm 20-30 cm thiab ib tug luj ntawm tsis ntau tshaj li peb puas grams. Podust ntses yog them nrog dos heev khov kho tiv thaiv: ib tug loj tsaus-ntsuab nyob tom qab, silvery nyob rau sab thiab plab. Nyob rau lub dorsal tis ntses yog feem ntau dub, thiab tus Tsov tus tw - grey, ntxoov txawv ceev. Undermouth spawning ntses , qhov twg cov dej sov so ntws calmly thiab tsis ceev. Yuav ua li cas yog nthuav yog hais tias qhov nruab nrab poj niam ntawm ib lub sij hawm tej zaum yuav muab ncua tau ntau tshaj 12 txhiab qe. Sweeps lub snow-dawb qe, nase ntses mus downstream. Nws yog pom nyob rau hauv yuav luag tag nrho cov dej ntws ntawm Russia. Txawm li cas los, Yog hais tias koj tsis npaj ib tug tshwj xeeb mus yos hav zoov yog rau nws, koj yuav tsis txawm xav tias undermouth nyob rau hauv lub zos dej.

Yos hav zoov rau Podust

Nws yog ironic tias qhov chaw ntawm pub Podust tsis coincide nrog nws tej vaj tse aav. "Caij" nase ntses nyob rau hauv lub mob rocky shallows, qhov twg lub pob zeb yog them nrog tej nroj tsuag. Nws yog ib qhov nyuaj mus ntxias no. Kab nuv ntses ntog los ntawm cov kab nrib pleb los yog nyob rau hauv cov pob zeb, tau nws Podust nyuaj, ces nws yuav tawg paj txi txiv. So cov ntses nyob ze ntawm lub av nplaum tej, tab sis muaj yog tsis muaj paj laum nyob rau hauv pub mis. Thiab tsis muaj pub nws tsis yooj yim sua mus caum. Ntses yog heev fond ntawm loj, tsis tsis kam txais lawv tus kheej adrift "zaub mov" tsis poob rau hauv qab. Yuav ua li cas? Nws yog qhov zoo tshaj plaws kom nrhiav tau ib ledge nyob ze ntawm lub ntug dej nrog ib tug ca nkos hauv qab tsis muaj hooks. Ua qhov zoo tshaj plaws kab nuv ntses ntawm steamed buckwheat nplej, nplej los yog barley. Yog hais tias cov khiav yog heev ceev ceev, lub grain yuav tsum dov rau hauv cov av nplaum, yog li ntawd lawv yuav tsis nqa tam sim ntawd. Txawm li cas los, mus rau hauv qab ntawm lub kab nuv ntses yuav tsum tsis txhob. Podust yuav ntses, dragging nws raws qab.

Ntxiv mus, nws yog tsim nyog xav tias cov ntses yog tsis tam sim ntawd nqos lub kab nuv ntses, thiab ib pliag tuav nws nyob rau hauv nws lub qhov ncauj, raws li yog hais saj. Lawm, nyob rau ntawm no point nws yuav yooj yim tawg dawb thiab khiav. Thaum nase ntses tseem swallows nws cov prey, nws pib mus rau thaum nws ua nruj ua tsiv, tab sis zoo hmoo, tsis ntev heev. Yog hais tias lub hauv qab yog them nrog hooks (qhov no yog feem ntau rooj plaub), luag Podust zoo tshaj plaws poludonkoy los yog plug. Nws yog tej yam ntuj tso tau hais tias nws yog ua tau rau ntes thiab los ntawm txhais tau tias ntawm ib tug feeder, tiam sis tsuas yog nyob rau hauv lub rooj plaub uas lub angler tuas nws heev skillfully. Undermouth txau ntses nyob rau hauv lub yav tav su, thiab nws yog lossi nyob rau hauv tsab ntawv tsa suab. Ua ntej, tus ntses yog rhiab heev rau dej kub thiab txaus tus nqi. Secondly, nws yog lossi "saib" high-kev loj hlob thickets ntawm hauv qab cov nroj tsuag. Ntses-catching traveler nyuaj, tab sis hais tias yog vim li cas nuv ntses Podust yuav yog li nthuav.