| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
4298
|
Gambusia affinis
|
Competition
|
Observational
|
Field
|
Gambusia affinis outcompetes Crenichthys baileyi (the White River springfish) for habitat, becoming the dominant species and replacing C. baileyi in some habitats in a spring system in Nevada.
|
Nevada, USA
|
119
|
|
5420
|
Gambusia affinis
|
Competition
|
Anecdotal
|
N/A
|
Introduced Gambusia affinis has been particularly destructive in the American West where they have contributed to the elimination or decline of populations of federally endangered and threatened species
|
|
901
|
|
5421
|
Gambusia affinis
|
Competition
|
Observational
|
Field
|
Gambusia affinis caused a habitat shift and a reduction in numbers of the threatened Railroad Valley springfish (Crenichthys baileyi) in springs in Nevada
|
Nevada
|
119
|
|
5422
|
Gambusia affinis
|
Competition
|
Observational
|
Field
|
Gambusia affinis caused the local elimination of the endangered Sonoran topminnow (Poeciliopsis occidentalis) in Arizona
|
Arizona
|
24270
|
|
5426
|
Gambusia affinis
|
Competition
|
Observational
|
Field
|
Gambusia affinis use the same habitat as the plains topminnow (Fundulus sciadicus) and have displaced the topminnow and other species with their aggressive behavior
|
|
1639
|