Dicrossus
| Dicrossus | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fork-tailed checkerboard cichlid ( Dicrossus filamentosus ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Dicrossus | ||||||||||||
| Steindachner , 1875 |
Dicrossus ( Gr .: “Di” = two; “krossos” = fringe, tip) is a genus of South American cichlids consisting of five species. The genus occurs in northern South America in the catchment area of the upper Rio Orinoco , the Rio Tapajós , the Rio Maués , the Rio Negro in Amazonia and the Río Atabapó in Colombia. The genus was described as early as 1875 by the Austrian zoologist Franz Steindachner ,but was synonymous with Crenicara in 1905 by the British ichthyologist Charles Tate Regan . In 1990 the Swedish ichthyologist Sven O. Kullander reversed this. Since then, the high-backed Crenicarids have been listed in the genus Crenicara , the slenderonesin Dicrossus .
features
Dicrossus species are 4 to 7 centimeters long and have a slender, elongated and laterally flattened body, a rounded snout and a slightly underneath mouth. Their chessboard-like pattern of spots on the sides of the body is characteristic, which is why they were given the German name chessboard cichlids.
species
So far, 5 species have been described:
- Dicrossus filamentosus (Ladiges, 1958)
- Dicrossus foirni Römer, Hahn & Vergara, 2010
- Dicrossus gladicauda Schindler & Staeck, 2008
- Dicrossus maculatus Steindachner, 1875
- Dicrossus warzeli Römer, Hahn & Vergara, 2010
External system
Dicrossus is closely related to the genera Biotodoma and Crenicara and forms with both the sub-tribus Crenicaratina. Both genera have their main distribution area in the rivers of the Andes east side.
literature
- Horst Linke, Wolfgang Staeck: American cichlids I, small cichlids. Tetra-Verlag, Bissendorf 1997, ISBN 3-8935-6153-6 .
- Uwe Römer: Cichliden Atlas 1: Natural history of the dwarf cichlids of South America Part 1. Mergus Verlag, Melle 1996, ISBN 3-88244-082-1 .
- Uwe Römer: Cichliden Atlas 2: Natural history of the dwarf cichlids of South America Part 2. Mergus Verlag, Melle 1996, ISBN 978-3-88244-084-3 .
- Claus Schaefer: Dicrossus. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. 2 volumes. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 325 f.
Individual evidence
- ↑ Hernán López-Fernándeza, Kirk O. Winemillerc, & Rodney L. Honeycutt: Multilocus phylogeny and rapid radiations in Neotropical cichlid fishes (Perciformes: Cichlidae: Cichlinae). Molecular Phylogenetics and Evolution Volume 55, Issue 3, June 2010, Pages 1070-1086 doi : 10.1016 / j.ympev.2010.02.020
Web links
- Dicrossus on Fishbase.org (English)