
polan (machhali)

polan yaa ayrish polan (corgonus polan yaa corgonus sharad ritu) ack taaja paani kii safed machhali haye joe kewal paanch ayrish jheelon, loff neegh, loer loff erne, loff ree, loff durg aur loff elen seey jaani jaati haye. parag koo pike, roach aur zebra musel jaisi pesh kii gaee prajaatiyon seey pratispardha kaa saamana karna padata haye, aur aabaadi jeevit rahane key liye restocking parr nirbhar karati haye.
sanrakshan kii sthiti.
parag aabaadi paaristhitiki tantra mein parivartan jaise kii utrofication aur pike, roach aur zebra musel sahit prajaatiyon mein vriddhi seey khatare mein haye. uttari ireland mein kewal laug neegh kii aabaadi prachur matra mein bunny hui haye aur ack chhote seey vaanijyik matsya paalan kaa samarthan karati haye. loff erne mein anya uttari ayrish aabaadi mein gambhir roop seey girawat aaee haye. loff ellen aabaadi kii pushti kewal 2006 mein pahali baar hui thee. anya aabaadi apane astitva key liye bhandaran parr nirbhar karati haye.
varnan.
ayrish parag aur "corgonus" vansh key anya sadasya dikhane mein bahut hii herring kii tarah hotey hain lekin ack edipose finn kii upasthiti unhein alag karati haye. munh apekshaakrit chhota hotaa haye aur daant parnapaati aur bahut chhote hotey hain. taraju madhyam aakar key hotey hain, prishthiya pankh madhyam lambai key hotey hain aur poonchh key pankh koo gaharaai seey kantedar kiya jaataa haye. vibhinn prajaatiyon koo alag karna taba taka mushkil haye jaba taka kii jheel kaa pataa naa chaley jahan seey way utpann hue hain. yeh prajaati ausat lambai aur vajan taka badhati haye.
paaristhitiki.
ayrish parag ack sholing prajaati haye. aahar mein chhote crustatian aur keat larva hotey hain. prajanan navambar aur disambar mein hotaa haye, jisamen gahare paani mein kathor bhoomi parr andey diye jaate hain.
vargeekaran.
vaigyaanik saahitya aur rashtriya jaiv vividhata aur sanrakshan aaklan mein, ayrish parag koo aamtaur parr "corgonus sharad ritu" prajaati key bheetar vargeekrit kiya jaataa haye. yeh ack vyaapak anadromous safed machhali haye joe tateey jall aur archtic cyberia, alaska aur kanada kii nadiyon mein rahati haye aur ise archtic sisko yaa cyberian omul key roop mein jaanaa jaataa haye. "see. sharad ritu "uttar-paschimi europe mein kaheen aur vitarit naheen haye, aur parag koo aksar" corgonus sharad ritu polan "key roop mein upa-prajaati kaa darja diyaa jaataa haye. yeye vargeekaran archtic aur ayrish safed machhali kii aabaadi kii nikat aanuvanshik samaantaa parr adharit hain. icon aur machhali key aadhar mein, ayrish parag koo, halanki, ack alag machhali prajaati "corgonus parag" key roop mein soochibaddh kiya gayaa haye.
apane archtic rishtedaron key vipareet, ayrish parag samudra mein pravaas naheen kartaa haye.