VU

Aplochiton marinus

Unknown

Overview

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

Aplochiton marinus faces severe pressure from introduced salmonid species, particularly rainbow trout and brown trout, which compete for resources and prey upon juvenile fish. Habitat degradation from agricultural runoff, urban development, and water extraction in coastal watersheds has reduced water quality and altered natural flow regimes. Climate change poses additional risks through rising sea temperatures and altered precipitation patterns affecting the species' anadromous lifecycle between marine and freshwater environments.

Threat summary

Habitat

This anadromous fish inhabits coastal rivers, streams, and estuaries of southern South America, moving between marine waters for feeding and freshwater systems for spawning. It prefers cool, well-oxygenated waters with gravel substrates in both Patagonian and Fuegian watersheds.

Marine coastal/supratidal· major

Conservation measures underway

Species recovery

Other threatened species in GALAXIIDAE

VU

Taieri Flathead Galaxias

Galaxias depressiceps

Declining
Dusky GalaxiasCR

Dusky Galaxias

Galaxias pullus

Declining
EN

Dwarf Galaxias

Galaxias divergens

Declining
VU

Galaxias sp. nov. 'Gourits'

Unknown

Frequently asked questions

Why is Aplochiton marinus classified as Vulnerable?
Aplochiton marinus is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Aplochiton marinus faces severe pressure from introduced salmonid species, particularly rainbow trout and brown trout, which compete for resources and prey upon juvenile fish. Habitat degradation from agricultural runoff, urban development, and water extraction in coastal watersheds has reduced water quality and altered natural flow regimes. Climate change poses additional risks through rising sea temperatures and altered precipitation patterns affecting the species' anadromous lifecycle between marine and freshwater environments.
Where does Aplochiton marinus live?
Aplochiton marinus 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 Aplochiton marinus?
The main threats to Aplochiton marinus 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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