Scientists surprised to find so many animals unknown to science in Alto Mayo, a well-populated region

Summary

Scientists conducting a biodiversity survey in Peru’s Alto Mayo region discovered 27 new species, including a blob-headed fish, amphibious mouse, and arboreal salamander. The 38-day expedition recorded over 2,000 species.

Findings include a rare semi-aquatic mouse found in a threatened swamp forest and seven new fish species. Indigenous knowledge played a key role in identifying many species.

Scientists also documented 49 threatened species, underscoring the region’s ecological significance and supporting efforts to bolster local conservation initiatives.