Identity
Unique IDELEMENT_GLOBAL.2.102368
Element CodeAFCQC04030
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVertebrate Animal
IUCNVulnerable
Endemicendemic to a single nation
KingdomAnimalia
PhylumCraniata
ClassActinopterygii
OrderPerciformes
FamilyPercidae
GenusPercina
Concept ReferenceRobins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea, and W.B. Scott. 1991. Common and scientific names of fishes from the United States and Canada. American Fisheries Society, Special Publication 20. 183 pp.
Conservation Status
Rank MethodExpertise without calculation
Review Date2012-04-18
Change Date1996-09-24
Edition Date2012-04-18
Edition AuthorsGlass-Godwin, L., and G. Hammerson
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences1 - 20
Rank ReasonsSmall range in the Coosa and Cahaba river systems, Georgia and Alabama; rare and localized; has declined due to water pollution, siltation, and reservoir construction.
Range Extent CommentsRange includes the Coosawattee River (Coosa River system), Georgia, and Cahaba River system (Cahaba River, Little Cahaba River, and Schultz Creek; Mobile Bay drainage), Alabama (Boschung and Mayden 2004, Page and Burr 2011).
Formerly this species occurred in 79 km of the Cahaba River, almost 11 km of the Little Cahaba River, and in Coosawattee River system; it survives in fragmented populations in the Coosawattee River, in about 11 km of the Little Cahaba River, and in 43 km of the Cahaba River (End. Sp. Tech. Bull. 16[5]:7-8). Rare and localized. Recent records are from the Cahaba River main channel between Piper Bridge (County Hwy 24) and Centreville and the lower reach of Little Cahaba River below Bulldog Bend (County Hwy 65), Bibb County (Pierson, pers. comm., 1997).
Occurrences CommentsNumber of occurrences has not been determined using standardized criteria. Possibly there are 8-10 occurrences in the main channels of Cahaba and Little Cahaba rivers, plus additional occurrences in the Coosawattee River.
Threat Impact CommentsDecline has been due to water pollution and siltation from sewage treatment plants, limestone quarrying, and strip-mining, and from the construction of reservoirs for hydropower, navigation, and flood control (End. Sp. Tech. Bull. 16[5]:8). Current threats include siltation and excessive nutrient inputs from residential development and poultry farms (J. M. Pierson, pers. comm., 1995).
Deforestation and agriculture have increased erosion by several orders of magnitude, and this fish is intolerant of an extraordinarily large amount of silt. Siltation also derives from strip mining, highway construction, and urban development. Habitat is also degraded by municipal sewage effluents and industrial pollutants. Impoundments also eliminated and degraded habitat. Source: Boschung and Mayden (2004).