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A new snake species, the northern green anaconda, sits on a riverbank in the Amazon's Orinoco basin. “The size of these magnificent creatures was incredible," Fry said in a news release earlier ...
Sexual size dimorphism in Eunectes is the opposite of most other vertebrates. Females are larger than males in most snakes, and green anacondas have one of the most extreme size differences, where females average roughly 32 kg (70 lb) and males average only around 7 kg (15 lb).
The new species, described in the journal Diversity, diverged from the previously known southern green anaconda about 10 million years ago, differing genetically from it by 5.5 per cent.
They include anacondas, pythons and boa constrictors, which are all non-venomous constrictors. The longest venomous snake, with a length up to 18.5–18.8 ft (5.6–5.7 m), is the king cobra, [1] while contesters for the heaviest title include the Gaboon viper and the Eastern diamondback rattlesnake. All of these three species reach a maximum ...
Green anacondas in the wild live for about 10 years. In captivity, they can live 30 years or more. The 2023 Guinness Book of World Records for the oldest living snake in captivity is a green anaconda aged 37 years 317 days, verified on 14 May 2021 by Paul Swires, at Montecasino Bird & Reptile Park in Johannesburg, South Africa. [49]
• The green anaconda is the largest (most massive) extant snake. The silhouette is scaled to 5.21 metres (17.1 ft) which was the longest measured and published in a study by Jesús Antonio Rivas that measured hundreds of anacondas. [2] There are reports of longer anacondas, but these reports have been questioned. [3] [4] [5]
A video shared online shows the scale of these 20-foot-long (6.1-meter-long) reptiles as one of the researchers, Dutch biologist Freek Vonk, swims alongside a giant 200-kilo (441-pound) specimen.
The northern green anaconda (Eunectes akayima) is a disputed boa species found in northern South America and the Caribbean island of Trinidad. It is closely related to Eunectes murinus , the (southern) green anaconda, from which it was claimed to be genetically distinct in 2024.