EN

Ancistrus minutus

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Ancistrus minutus faces severe pressure from deforestation and agricultural expansion throughout its limited range in the Amazon basin. Dam construction and water diversions have altered natural flow patterns in the streams where this small armored catfish depends on specific current conditions for feeding and reproduction. Mining activities and urban development have increased sedimentation and chemical pollution in its freshwater habitats, while the aquarium trade has created additional collection pressure on wild populations.

Threat summary

Habitat

This species inhabits fast-flowing, well-oxygenated streams and tributaries in the Amazon rainforest, typically found among rocky substrates and fallen logs where it grazes on algae and biofilm. It requires clear water with stable temperatures and specific current patterns for successful reproduction and juvenile development.

Other threatened species in LORICARIIDAE

VU

Harttia dissidens

Declining
EN

Pseudotocinclus tietensis

Unknown
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Chaetostoma stannii

Unknown
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Chaetostoma yurubiense

Unknown

Frequently asked questions

Why is Ancistrus minutus classified as Endangered?
Ancistrus minutus is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Ancistrus minutus faces severe pressure from deforestation and agricultural expansion throughout its limited range in the Amazon basin. Dam construction and water diversions have altered natural flow patterns in the streams where this small armored catfish depends on specific current conditions for feeding and reproduction. Mining activities and urban development have increased sedimentation and chemical pollution in its freshwater habitats, while the aquarium trade has created additional collection pressure on wild populations.
Where does Ancistrus minutus live?
Ancistrus minutus occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Ancistrus minutus?
The main threats to Ancistrus minutus are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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