FB-64791 http://www.fishbase.org/summary/SpeciesSummary.php?id=64791 Animalia Chordata Teleostei Siluriformes Akysidae Akysis Akysis vespertinus Ng, 2008 Marbled Darter 2008-12-11 2016-01-13 Blanton, R.E. and R.E. Jenkins0 Three new darter species of the <i>Etheostoma percnurum</i> species complex (Percidae, subgenus <i>Catonotus</i>) from the Tennessee and Cumberland river drainages. Zootaxa 1963:1-24. (Ref. 79849) FB-DiagnosticDescr-64803 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2008-12-15 23:59:03 2008-12-15 23:59:03 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=64803 Etheostoma marmorpinnum is distinguished from all other members of the species complexby higher percentage of belly covered by scales (60–80% vs. 10% or less); higher percentage of body area along the first dorsal-fin base covered with scales (100% vs. 70% or less); dark distinct marbling in second dorsal fin of nuptial males (vs. lighter diffuse marbling or marbling absent); narrower band width for caudal fin (range = 12–15% of fin length vs. 15–25%) and anal-fin (range = 29–33% vs. 33–58%); more scalesaround caudal peduncle (25 vs. 23 or 24); and higher first dorsal fin (D1H, =117 vs. 105 or less). The species is further distinguished from E. percnurum by fewer caudal fin rays (15 vs. 18); narrower distal band on pectoral fin (range = 17–20% vs. 27–32% of fin length) and second dorsal fin (14–21% vs. 23–25% of finheight); and by prominent tessellation of medial region of caudal fin of nuptial males (vs. uniformly dusky). Further distinguished from E percnurum and E. sitikuense by an intermediate number of pored lateral-line scales (27 vs. 22 or 33 respectively). Means of other measurements were also informative in distinguishing E. marmorpinnum from other members of the complex (Ref. 79849). Blanton, R.E. and R.E. Jenkins 2008 Three new darter species of the <i>Etheostoma percnurum</i> species complex (Percidae, subgenus <i>Catonotus</i>) from the Tennessee and Cumberland river drainages. Zootaxa 1963:1-24. (Ref. 79849) FB-Distribution-64803 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2008-12-15 23:53:56 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=64803 North America: USA. Etheostoma marmorpinnum occurs in lower Little River (Tennessee drainage), Blount County, Tennessee, but is generally rare in the upstream reaches. The species does not appear to be continuously distributed. The stronghold is just upstream of the backwaters of Fort Loudoun Reservoir (Layman 1991). Also known from a single specimen from the South Fork Holston River in Sullivan County, Tennessee, collected in 1947, three years before construction of the South Fork Holston Dam was completed. The capture site was 0.6 rkm above the dam, whose tailwater has long been and continues to be cold-water. The species is now extirpated from the Holston River (Ref. 79849). Blanton, R.E. and R.E. Jenkins 2008 Three new darter species of the <i>Etheostoma percnurum</i> species complex (Percidae, subgenus <i>Catonotus</i>) from the Tennessee and Cumberland river drainages. Zootaxa 1963:1-24. (Ref. 79849) FB-Size-64803 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2008-12-15 23:43:45 2024-03-20 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=64803 4.1 cm SL (male/unsexed; (Ref. 79849)) Blanton, R.E. and R.E. Jenkins 2008 Three new darter species of the <i>Etheostoma percnurum</i> species complex (Percidae, subgenus <i>Catonotus</i>) from the Tennessee and Cumberland river drainages. Zootaxa 1963:1-24. (Ref. 79849) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2 Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-64803 http://purl.org/dc/dcmitype/Text text/html Frédéric Busson 2008-12-15 23:43:45 2024-03-20 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=64803 benthopelagic; freshwater