CRCritically Endangered

Gambusia hurtadoi

Gambusia hurtadoi is a small freshwater fish species endemic to Mexico, belonging to the family Poeciliidae. This livebearing fish is found in extremely limited freshwater habitats within the country's interior drainage systems.

2

Countries

01Classification

Taxonomy & Classification

Kingdom

ANIMALIA

Phylum

CHORDATA

Class

ACTINOPTERYGII

Order

CYPRINODONTIFORMES

Family

POECILIIDAE

Genus

Gambusia

Gambusia hurtadoi belongs to the family POECILIIDAE, order CYPRINODONTIFORMES, within the ACTINOPTERYGII class.

02Description

Species Profile

Gambusia hurtadoi is a small freshwater fish species endemic to Mexico, belonging to the family Poeciliidae. This livebearing fish is found in extremely limited freshwater habitats within the country's interior drainage systems. The species exhibits typical gambusia characteristics, including a small body size and the ability to reproduce through internal fertilization, with females giving birth to live young rather than laying eggs. Gambusia hurtadoi faces severe threats to its survival, primarily from habitat destruction and degradation of its freshwater environments. Human activities including agricultural development, water extraction, and pollution have significantly impacted the limited water bodies where this species occurs. The introduction of non-native fish species has also posed additional pressure through competition and predation. Climate change and prolonged drought conditions further threaten the already restricted aquatic habitats essential for the species' survival. The extremely limited distribution range makes Gambusia hurtadoi particularly vulnerable to local extinctions, as any disturbance to its habitat could potentially eliminate entire populations. Conservation efforts for this critically endangered species remain limited, though habitat protection and water quality management are essential for preventing extinction. Research into the species' specific ecological requirements and population status is needed to develop effective conservation strategies. The preservation of remaining freshwater habitats and control of invasive species are critical components for the long-term survival of Gambusia hurtadoi.

Gambusia hurtadoi faces severe threats from habitat destruction caused by agricultural development, water extraction, and pollution of its limited freshwater environments. The introduction of non-native fish species has created additional pressure through competition and predation. Climate change and drought conditions further threaten the already restricted aquatic habitats essential for this species' survival.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupFishes
03Habitat

Habitat & Distribution

Gambusia hurtadoi inhabits freshwater environments within Mexico's interior drainage systems. The species is restricted to small freshwater bodies including springs, streams, and associated aquatic habitats with limited geographic distribution.

FRESHWATERMajor
04Threats

Threats

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IUCN Red List: Critically Endangered

Gambusia hurtadoi faces severe threats from habitat destruction caused by agricultural development, water extraction, and pollution of its limited freshwater environments. The introduction of non-native fish species has created additional pressure through competition and predation. Climate change and drought conditions further threaten the already restricted aquatic habitats essential for this species' survival.

Annual & perennial non-timber crops

Ongoing

Dams & water management/use

Ongoing

Habitat shifting & alteration

Ongoing

Logging & wood harvesting

Ongoing

Other ecosystem modifications

Ongoing
05Conservation

Conservation Actions

Awareness & communications
06Range

Found in 2 Countries

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). Gambusia hurtadoi (Gambusia hurtadoi). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/crescent-gambusia

Full citation guide & data usage terms