Nannostomus mortenthaleri
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Nannostomus_mortenthaleri
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Nannostomus mortenthaleri faces severe threats from deforestation and agricultural expansion in its restricted range within the Peruvian Amazon. Mining activities and water pollution from agricultural runoff further degrade the pristine blackwater and clearwater streams this species requires. The extremely limited geographic distribution makes the entire population vulnerable to localized environmental changes or habitat destruction.
Habitat
This pencilfish inhabits slow-moving blackwater and clearwater streams in pristine rainforest areas of the Peruvian Amazon basin. It prefers shallow, heavily vegetated waters with soft substrates and abundant aquatic plants that provide cover and foraging opportunities.
