Yellow Anaconda

Yellow Anaconda

Eunectes notaeus

Silhouette: Gamma 124 · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~40% · Likely
at Iberá National Park
39 Verified sightings at Iberá National Park From 2019 to 2026
103 Verified sightings across all 3 parks From 2019 to 2026
July Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Yellow Anaconda

The yellow anaconda (Eunectes notaeus), also known as the Paraguayan anaconda, is a boa species endemic to southern South America. It is one of the largest snakes in the world but smaller than its close relative, the green anaconda. No subspecies are currently recognized. Like all boas and pythons, it is non-venomous and kills its prey by constriction.

The Neo-Latin specific name notaeus derives from Ancient Greek: νωταίος, romanized: nōtaios, lit. 'dorsal' (νωταίος is a poetic form of νωτιαίος/nōtiaios). In distinguishing his new species Eunectes notaeus from Eunectes murinus, Edward Drinker Cope stated, "Dorsal scales are larger and in fewer rows."

Adults grow to an average of 3.7 m (12 ft 1+1⁄2 in) in total length. Females are generally larger than males and have been reported up to 4.6 m (15 ft 1 in) in length. They commonly weigh 25 to 35 kg (55 to 77 lb), but specimens weighing more than 55 kg (121 lb) have been observed. The color pattern consists of a yellow, golden-tan or greenish-yellow ground color overlaid with a series of black or dark brown saddles, blotches, spots and streaks.

The range of the yellow anaconda... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Parque Estadual Encontro das Águas 🇧🇷 Brazil
~40%
2 Iberá National Park 🇦🇷 Argentina
~40%
3 El Impenetrable National Park 🇦🇷 Argentina
Insufficient data

Quick answers

What are the chances of seeing a Yellow Anaconda in Iberá National Park?

About 40% of wildlife watchers report a Yellow Anaconda sighting in Iberá National Park, based on 39 verified sightings from GBIF citizen-science data.

When is the best time to see Yellow Anaconda in Iberá National Park?

July has the highest sighting rate for Yellow Anaconda in Iberá National Park in our monthly data.

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