Amber darter

The amber darter (Percina antesella) is a small, endangered species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to the Conasauga River and Etowah River in Georgia and Tennessee in the United States. It typically inhabits riffle areas over gravel and sand bottoms, hiding in aquatic vegetation when present. It feeds on small invertebrates and probably breeds between late fall and early spring. It is an uncommon fish with a small range and the International Union for Conservation of Nature has classified its conservation status as being "endangered".

Amber darter
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Percidae
Genus: Percina
Species:
P. antesella
Binomial name
Percina antesella
Williams & Etnier, 1977

Description

The amber darter is typically less than 2.5 in (6.4 cm) in length and has a slender body. It has dark saddle-like markings on its golden brown upper body while the belly is a yellow-to-cream color. Breeding males have blue throats.[2]

Ecology

While there is little data available about the breeding habits of the amber darter, what information is available suggests that it spawns from late fall to early spring. The amber darter likely lives up to 3 years.[3]

The amber darter inhabits the Coosa River system, living in the Conasauga and Etowah rivers of northern Georgia and southeastern Tennessee. In these rivers, it prefers to inhabit riffle areas over gravel substrate and sand.[4] During the summer, when aquatic vegetation grows in the rivers, the amber darter feeds in the vegetation and uses it for cover.[3] The amber darter preys mainly on gastropods, such as limpets and Snails, and aquatic insects.[5]

Status

A proposed reservoir may put the survival of the amber darter at risk by altering water and habitat quality in the amber darter's downstream habitat. Because of the amber darter's limited distribution, practically any activity that could degrade habitat or water quality, such as logging, chemical spills, or construction could threaten the existence of the amber darter. Conservation efforts focus on habitat preservation. It is an uncommon fish with a small range and the International Union for Conservation of Nature has classified its conservation status as being "endangered".[1]

References
  1. NatureServe (2013). "Percina antesella". IUCN Red List of Threatened Species. 2013: e.T16585A19034039. doi:10.2305/IUCN.UK.2013-1.RLTS.T16585A19034039.en. Retrieved 20 November 2021.
  2. James D. Williams & David A. Etnier (1977). "Percina (Imostoma) antesella, a new percid fish from the Coosa River system in Tennessee and Georgia". Proceedings of the Biological Society of Washington. 90 (1): 6–18.
  3. Hammerson, G. (2012). "Percina antsella". NatureServe Explorer. NatureServe. Retrieved 29 October 2020.
  4. "Amber Darter (Percina antesella)". Tennessee Aquarium. Retrieved 29 October 2020.
  5. "U.S. Fish and Wildlife Service Draft Revised Recovery Plan for the Amber Darter (Percina antesella)" (PDF). U.S. Fish and Wildlife Service. Retrieved 29 October 2020.
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