Species of Scoloplax are readily distinguishable from other catfishes by the presence of a conspicuous shield-shaped rostral plate bearing numerous large and recurved odontodes.[4] These fish have three rows of odontode-bearing plates, two bilateral series and one midventral series. There is also a rostral plate with many recurved odootodes. The adipose fin is absent.[3] The greatest length reached is about 20 mm (0.79 in) SL.[3]
Scoloplax species have modified stomachs that are enlarged, thin-walled, and clear. The esophagus enters the stomach along the dorsal side just posterior to the anterior margin of the stomach; the intestine exits the stomach ventrally. A small patch of muscular tissue represents the digestive portion of the stomach, located from the entrance of the esophagus to where the intestine exits. This modified stomach may be for buoyancy control or for breathing air.[6]
Ecologyedit
Scoloplax species are fairly common among leaf litter in clear and blackwater habitats, including oxbow lakes, backwater pools, and well-vegetated streams.[4][6]
Referencesedit
^Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Scoloplax in FishBase. February 2012 version.
^ abRocha, R., Lazzarotto, H. & Rapp Py-Daniel, L. (2012): A New Species of Scoloplax with a Remarkable New Tooth Morphology within Loricarioidea (Siluriformes: Scoloplacidae). Copeia, 2012 (4): 670-677.
^ abcdeRocha, Marcelo Salles; Oliveira, Renildo Ribeiro; Py-Daniel, Lúcia H. Rapp (2008). "Scoloplax baskini: a new spiny dwarf catfish from rio Aripuanã, Amazonas, Brazil (Loricarioidei: Scoloplacidae)". Neotropical Ichthyology. 6 (3): 323–328. doi:10.1590/S1679-62252008000300005.
^ abcFerraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628. doi:10.11646/zootaxa.1418.1.1.
^ abArmbruster, Jonathan W. (1998). "Modifications of the Digestive Tract for Holding Air in Loricariid and Scoloplacid Catfishes" (PDF). Copeia. 1998 (3): 663–675. doi:10.2307/1447796. JSTOR 1447796.
April 08, 2024
scoloplax, confused, with, scolopax, only, genus, catfish, order, siluriformes, family, scoloplacidae, spiny, dwarf, catfishes, scientific, classificationdomain, eukaryotakingdom, animaliaphylum, chordataclass, actinopterygiiorder, siluriformessuperfamily, lor. Not to be confused with Scolopax Scoloplax is the only genus in the catfish order Siluriformes family Scoloplacidae the spiny dwarf catfishes ScoloplaxScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ActinopterygiiOrder SiluriformesSuperfamily LoricarioideaFamily ScoloplacidaeBailey amp Baskin 1976Genus ScoloplaxBailey amp Baskin 1976Type speciesScoloplax dicraBailey amp Baskin 1976 Contents 1 Species 2 Distribution 3 Description 4 Ecology 5 ReferencesSpecies editThe six currently recognized species in this genus are 1 2 Scoloplax baileyi Rocha Lazzarotto amp Rapp Py Daniel 2012 2 Scoloplax baskini Rocha de Oliveira amp Rapp Py Daniel 2008 Scoloplax dicra Bailey amp Baskin 1976 Scoloplax distolothrix Schaefer Weitzman amp Britski 1989 Scoloplax dolicholophia Schaefer Weitzman amp Britski 1989 Scoloplax empousa Schaefer Weitzman amp Britski 1989 Pantanal dwarf catfish Distribution editScoloplax is distributed in South America in Peru Bolivia Brazil and Paraguay 3 S baskini is from the small tributaries of Rio Aripuana Rio Madeira drainage Amazonas State Brazil 4 S dicra has the largest distribution in the Amazon basin originating from the Amazon and Paraguay River basins 4 5 S distolothrix inhabits the Tocantins Araguaia Xingu and Paraguay River basins 5 S dolicholophia is known from the Rio Negro basin in Brazil as well as the Lake Amana 4 S empousa lives in the Amazon and Paraguay Parana River basins 5 Description editSpecies of Scoloplax are readily distinguishable from other catfishes by the presence of a conspicuous shield shaped rostral plate bearing numerous large and recurved odontodes 4 These fish have three rows of odontode bearing plates two bilateral series and one midventral series There is also a rostral plate with many recurved odootodes The adipose fin is absent 3 The greatest length reached is about 20 mm 0 79 in SL 3 Scoloplax species have modified stomachs that are enlarged thin walled and clear The esophagus enters the stomach along the dorsal side just posterior to the anterior margin of the stomach the intestine exits the stomach ventrally A small patch of muscular tissue represents the digestive portion of the stomach located from the entrance of the esophagus to where the intestine exits This modified stomach may be for buoyancy control or for breathing air 6 Ecology editScoloplax species are fairly common among leaf litter in clear and blackwater habitats including oxbow lakes backwater pools and well vegetated streams 4 6 References edit Froese Rainer and Pauly Daniel eds 2012 Species of Scoloplax in FishBase February 2012 version a b Rocha R Lazzarotto H amp Rapp Py Daniel L 2012 A New Species of Scoloplax with a Remarkable New Tooth Morphology within Loricarioidea Siluriformes Scoloplacidae Copeia 2012 4 670 677 a b c Nelson Joseph S 2006 Fishes of the World John Wiley amp Sons Inc ISBN 0 471 25031 7 a b c d e Rocha Marcelo Salles Oliveira Renildo Ribeiro Py Daniel Lucia H Rapp 2008 Scoloplax baskini a new spiny dwarf catfish from rio Aripuana Amazonas Brazil Loricarioidei Scoloplacidae Neotropical Ichthyology 6 3 323 328 doi 10 1590 S1679 62252008000300005 a b c Ferraris Carl J Jr 2007 Checklist of catfishes recent and fossil Osteichthyes Siluriformes and catalogue of siluriform primary types PDF Zootaxa 1418 1 628 doi 10 11646 zootaxa 1418 1 1 a b Armbruster Jonathan W 1998 Modifications of the Digestive Tract for Holding Air in Loricariid and Scoloplacid Catfishes PDF Copeia 1998 3 663 675 doi 10 2307 1447796 JSTOR 1447796 Retrieved from https en wikipedia org w index php title Scoloplax amp oldid 1180156248, wikipedia, wiki, book, books, library,
