Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Atheriniformes Atherinopsidae

Scientific Name: Menidia conchorum
Species Authority: Hildebrand & Ginsburg, 1927
Common Name(s):
English Key Silverside

Assessment Information [top]

Red List Category & Criteria: Lower Risk/near threatened ver 2.3
Year Published: 1996
Date Assessed: 1996-08-01
Needs updating
Assessor(s): World Conservation Monitoring Centre
Previously published Red List assessments:
1994 Vulnerable (V)
1990 Vulnerable (V)
1988 Rare (R)
1986 Rare (R)

Geographic Range [top]

Range Description: Occurs throughout much of the lower Florida Keys, Monroe County, USA. (M. Gimenez-Dixon pers comm 1996).
Countries occurrence:
United States (Florida)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: More than 20, though many in close proximity. Several on Big Pine and Cudjoe Keys. Probably extirpated from Key West. (M. Gimenez-Dixon pers comm 1996)
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Occurs in ponds of varying salinity.
Marine; typically shallow open bays of Florida Keys; eurhaline; known from freshwater, lagoons, impoundments. (M. Gimenez-Dixon pers comm 1996)
Systems: Freshwater

Threats [top]

Major Threat(s): Filling of habitat for housing, introduced predatory fishes, hypersalinity from impoundment. (M. Gimenez-Dixon pers comm 1996)

Conservation Actions [top]

Conservation Actions: Protected occurrences on Great White Heron NWR, Key Deer NWR and Long Key SRA. However, the management plans of these refuges likely ignore this taxon. 
Protection of EOs and adjacent uplands as preserves. Prevent habitat degradation (pollution, dredging, filling); reduce mosquitocide spraying. (M. Gimenez-Dixon pers comm 1996)

Citation: World Conservation Monitoring Centre. 1996. Menidia conchorum. The IUCN Red List of Threatened Species 1996: e.T13145A3414028. . Downloaded on 14 October 2015.
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