Kifi perch (hoto). Ruwa tare kifi perch. grouper

Duk da masunta da kifi ke dafa saba perch. Amma mu sani cewa wannan wakilin ne ba kawai teku, amma kuma da kogin. Tsakanin wadannan nau'o'i biyu, akwai gagarumin bambanci a matsayin daɗin ci, kazalika da waje.

kogin perch

Wannan shi ne wani kyakkyawan wakilin waje Manuniya, kuma mafi yawansu da launi yana da wani greenish-yellow ya dafa. Suna kuma ado da hujjõji mai gangara makada. Su ciki ne ko da yaushe mai haske. Shi yana da tauri, babban, kaifi fins. Wutsiya a kasa na wani duhu launi, da kuma gefen baki ne daban-daban mulufi launi. Perch jiki ne laterally matsa. The shugaban jũya a cikin wani hump. Har ila yau, an bambanta da kananan idanu.

Wannan kifi yana da wani subspecies, kamar sauran iyalai. Hakika, akwai groupers, sãɓã wa jũna a canza launi, size ko wasu halaye. Amma irin wannan bambance-bambance na iya gani da muhalli matsayi na ruwa jikin da su rage cin abinci. Amma a cikin wani akwati shi ne talakawa kogin perch. Abin da kifi, kuma bã a kamu, perch ba za a iya rikita batun tare da wasu jinsuna ko iyalansu. Yana iya girma har zuwa rabin mita, da kuma a lokaci guda auna 4.8 fam. Yana zaune har zuwa shekaru 17. Amma sau da yawa a kan wani m kama kifi ba ya isa da wannan size da kuma a kan talakawan ne kamar 15-30 cm. Wannan shi ne da shekaru hudu-shekara mutane. Wannan irin kifi zauna ruwan mafi Eurasia.

Rayuwa da kuma ci gaban da kogin mazauni

Wannan lake-kogin jinsunan ne predatory. Ya na zaune a jihar bakin teku wuraren a karkashin ruwa thickets. A wadannan wurare yana da sauki ga samar da abinci - zooplankton da kananan kifi matasa. Amma dangane da kandami a cikin abin da kifi perch kawaici, ta rage cin abinci su iya bambanta. The fi girma da kandami, da aukaka da abinci tushe, da kuma wani "menu" daga cikin kifi zama more bambancin. A cikin wadannan lokuta, shi zai fara zuwa raba cikin uku ko biyu "jinsi", wanda suna daban-daban tsakanin gudun na ci gaba, mazauninsu da abinci abun da ke ciki. Kusa da bankunan na perch aka girma sannu a hankali, domin ya rage cin abinci ne mafi yawa shuka da kuma invertebrate abinci. Idan perch zauna acan, da girma ne sauri, shi yafi ciyarwa a kan sauran kifi soya. Saboda haka, ko da suke zaune a wannan lake, da lokaci na balaga a wadannan daban-daban occupants.

spawning

Yawancin ruwa tare kifi perch zama jima'i balagagge a shekara biyu ko uku da haihuwa. A tsawon kifi a wannan lokaci na iya zama sosai daban-daban. Spawning ko da yaushe ta fara a spring bayan kankara. A kudancin wannan lokaci da dama a watan Fabrairu da Maris a arewacin yankunan a cikin May-Yuni. The mace kayansa mãsu qwai a kan shuka bara. Number of qwai dabam ƙwarai, kuma aka lasafta a cikin dubban 12 zuwa 300. perch kyau rayuwa qwai da kuma larvae. Kafin caviar nufin tsutsa, wuce makonni biyu. Da zaran yara suna fara ganima kan plankton. River kifi perch (photo shawarar sama) spawn kawai sau daya a shekara.

marine wakilin

River da kuma teku bass ne sosai daban-daban kifi. Bayyana a kan ta fuskar da za a samu da kamanni biyu, waɗannan, wakilan da submarine, amma ciki tsarin da sauran siffofin da shi ya bayyana cewa wadannan iri biyu mabanbanta teams. Marine kifi grouper (photo kasa) za su iya samun manyan idanu da kuma haske ja launi. Yawancin lokaci, shi ne muhimmi a cikin zurfin teku jinsunan. Irin wannan waje data taimaka kifi zaune a akai semidarkness. Perch, wanda aka kiyaye kusa da bakin tekun, da idanu ba sosai da size da kuma canza launi duhu. Su sau da yawa da giciye juna, amma tare da shekaru shi zai iya zama ƙasa da m.

A cikin iyali na groupers yana da game da 90 jinsin. Girman su ne ma sosai daban-daban. Alal misali, da karami kawai ke tsiro zuwa 20 santimita, yayin da most jinsuna a cikin adadin har zuwa mita. Wadannan mazauna iya rayuwa har zuwa shekaru 15. Shi ne ma daraja da sanin cewa kifi ne teku bass ne na biyu sunan "smarida".

habitats

Mafi yawa daga cikin membobin wannan iyali na zaune a cikin Arewa Pacific a temperate ruwaye. Nau'I hudu na rockfish da ake samu a cikin tekun Atlantic. Kuma suna da wakilai a cikin Barents Sea, Black Sea, da Norwegian. Wadannan kifaye yi hijirarsa. mazauninsu zurfin ya dogara da jinsunan da kuma yankin na zama. Alal misali, samfurori daga Barents Sea ana sa a 150-300 mita, da kuma a cikin Black Sea saukar kawai 5-30 mita.

hanyar rayuwa

Groupers ci gaba da garkunan tumaki. A rage cin abinci na mutane da suka yi ba su kai 30 cm, yin Shellfish, caviar, sauran dangi, da ƙananan kifaye, karkashin ruwa ciyayi da kuma daban-daban crustaceans. Marine kifi perch, wanda aka kiyaye kusa da bakin tekun, yawanci na zaune a cikin daji da kuma ba sa takamaiman hijira. Sun riga sun mamaye wani karamin yanki. Domin farautar, wadannan groupers boye a kwanto, kuma ba zato ba tsammani snapped zuwa taso kan ruwa kusa da azabtar. Kifi cewa ana sa zurfi, ne mafi aiki, kuma yawanci ba za su iya saduwa da kai daga Coast. A wannan yanayin, kifi ba dogara a kan kasa. Ya fi girma mutane da ciyar a kan kifi - herring, capelin, na yara cod da sauran kashpakom.

Sake bugun redfish

Duk irin wannan iyali ne viviparous. Da zarar mace an hadu, suna motsi daga namiji da samun a fakitoci a wurare inda za a zubar larvae. Spawning perch ya faru a kowace shekara. Number of litters yawa fiye da sauran livebearers, kuma a sau iya samun har zuwa miliyan biyu da larvae kafa. Number of zuriyata ya dogara da girman kifi. Perch larvae fara jefa a cikin bazara. Kafa a kan haske soya da ciwon wani talakawan size of daga 5.2 zuwa 8 mm. Tun jefawa daukan wuri a cikin dumi makamai, da larvae fall a cikin rafi da kuma kwashe zuwa arewa. Saboda haka su ne a yankunan tsakiya da kuma ci gaba da kai daga bakin gaci. Duk lokacin rani dogon su ne a cikin babba Layer na ruwa. A wannan lokaci, da manya je gabas.

A kasuwanci darajar

Kifi perch ne musamman yaba a kama kifi kansu. Da samar da daukan wuri trawl Hanyar. A nama na wannan jinsin su ne sosai dadi da kuma dace da sayarwa a cikin kyafaffen, daskararre, Salted da kuma sabo. An sani cewa a lokacin yankan daga cikin kifi ya kamata sosai da hankali, musamman idan aiwatar da aka yi a kan jirgin ruwa. Spines, wanda suna samuwa ga wannan nau'in, zai iya zama haɗari. Wannan rauni sau da yawa take kaiwa zuwa matsalolin da ci gaba da dama makonni, da kuma wani lokacin watanni. Wani lokaci, wannan lalacewa iya barin wani bugu a duk rayuwarsa, misali, da yatsa daina aiki.