Boatman frog

Boatman frog

Trachycephalus resinifictrix

Silhouette: Lauren McLean · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Amacayacu National Natural Park
2 Verified sightings at Amacayacu National Natural Park From 2019 to 2026
9 Verified sightings across all 2 parks From 2019 to 2026
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Boatman frog

The Mission golden-eyed tree frog or Amazon milk frog (Trachycephalus resinifictrix) is a large species of arboreal frog native to the Amazon rainforest in South America. It is sometimes referred to as the blue milk frog due to a sticky, milk-like substance that they produce when feeling threatened. It was first discovered along the Maracanã River in Brazil. This species was previously within the genus Phrynohyas, which was recently synonymized with Trachycephalus.

These frogs are fairly large, reaching sizes of 2.5 to 4.0 in (6.4 to 10.2 cm) in length. Adult frogs are light grey in colour with brown or black banding, while juveniles will exhibit stronger contrasts. As they age, their skin develops a slightly bumpy texture. Their blood tends to be a shade of blue which can be shown through their skin, most boldly in the mouth area and toe pads.

The "milk" in the common name comes from the milky fluid these frogs excrete when stressed. Mission golden-eyed tree frogs are found in the tropical rain forests of South America. Populations are widespread in Guyana, Colombia, Brazil, Ecuador and Peru. They often inhabit vegetation which extends over permanent... Wikipedia →

Closest Relatives at Amacayacu National Natural Park

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Anavilhanas National Park 🇧🇷 Brazil
Insufficient data
2 Amacayacu National Natural Park 🇨🇴 Colombia
Insufficient data
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