Researchers from the National Institute of Amazonian Research (Inpa) have identified a **new species of poisonous frog**, named **Ranitomeya aquamarina**, in a preserved area of the **Eiru River**, a tributary of the Juruá River.
This small amphibian measures between **15 and 18 millimeters** and stands out for its **metallic shades** in blue, green, and orange, reminiscent of the sheen of **precious stones**.
The discovery, published in the scientific journal **ZooKeys**, marks the first record of **a poisonous frog** of the Ranitomeya genus in over a decade.
## A poisonous and rare frog
The research found **only 12 specimens** in the region, suggesting that **the species is uncommon**.
Its coloration is **not just aesthetic**, but a **warning to predators** about the presence of **potent toxins**.
The name **aquamarine** refers to both **seawater** and the **precious stone**, reinforcing the value of the discovery.
## Unusual monogamous behavior
What has intrigued scientists the most is the **possible monogamy** of Ranitomeya aquamarina, something rare among amphibians.
– Males emit intense vocalizations when their partner is captured, which could be a protest against separation.
– Their song serves a dual purpose: expressing attachment and defending their territory.
– Each call consists of 21 to 45 notes, with prolonged trills for hours in the morning.
These data support the hypothesis that this species could **form fixed pairs**, something unusual in frogs.
## Survival and adaptation strategies
The metallic sheen of Ranitomeya aquamarina is a **defensive tool**.
– Their aposematic coloration warns predators that the amphibian is poisonous.
– Their legs are adapted to arboreal life, with disc-shaped tips that act as suction cups, facilitating mobility in humid environments.
## A symbol of Amazonian biodiversity
Scientists emphasize that the discovery of **R. aquamarina** recalls the **still unexplored richness of the Amazon**.
They hope that this new species will **promote forest conservation** and encourage further scientific research in understudied areas.
