Lub Prehistoric Piranhas, lub npe hu ua Pygocentrus nattereri lossis "Original Piranha", yog ib hom tsiaj uas muaj keeb kwm yav dhau los ntawm piranha uas tau ntseeg ntev los lawm ncig 2, 000, 000 xyoo dhau los.
Piranha tau ploj mus li cas?
Txawm li cas los xij, thaum lub roob Andes sawv, lawv tau cais ob lub phiab, uas cov kws tshawb fawb xav tias ua rau mega-piranha ploj mus. "Koj tau xaus nrog cov hnab ris cais, qhov chaw nyob tau poob qis," Grubich hais rau LiveScience. "Yuav tsis muaj cov khoom siv prey muaj los txhawb nqa nws lub cev."
Pob piranhas tseem muaj nyob 2020?
Hnub no, piranhas nyob dej qab zib ntawm South America los ntawm Orinoco River Basin hauv Venezuela mus txog tus dej Paraná hauv Argentina. Txawm hais tias kev kwv yees sib txawv, nyob ib ncig ntawm 30 hom nyob hauv cov pas dej thiab cov dej ntws ntawm South America niaj hnub no.
Puas muaj prehistoric piranha?
Cov kws tshawb fawb tau tshawb pom qhov fossilised seem ntawm ib hom tsiaj zoo li piranha uas lawv hais tias yog qhov piv txwv ntxov tshaj plaws ntawm cov ntses noj nqaij. Lub cev nqaij daim tawv no, pom nyob rau sab qab teb lub teb chaws Yelemees, nyob txog 150 lab xyoo dhau los thiab muaj cov hniav ntse ntse ntawm cov piranhas niaj hnub no.
Puas yog mega piranhas tseem muaj sia nyob?
Megapiranha is an extinct serrasalmid characin ntses los ntawm Late Miocene (8–10 lab xyoo dhau los) Ituzaingó Tsim ntawm Argentina, piav qhia hauv 2009. Hom hom yog M.paranensis.
