Wavy armored catfish

Wavy armored catfish
Systematics
Order :	Catfish (Siluriformes)
Subordination :	Loricarioidei
Family :	Armored and calloused catfish (Callichthyidae)
Subfamily :	Armored catfish (Corydoradinae)
Genre :	Corydoras
Type :	Wavy armored catfish
Scientific name
	Corydoras undulatus
	Regan , 1912

The corrugated armored catfish ( Corydoras undulatus ( Latin undulatus , `` provided with waves '' )) is a freshwater fish native to the lower Río Paraná and the coastal rivers of southeastern Brazil .

features

Female corrugated armored catfish reach a maximum size of 5 cm, while males stay smaller and are slimmer. The wavy armored catfish has a typical Corydoras shape, but is more elongated than most other species. It has a yellowish to olive-brownish basic color. The sides are patterned by numerous dark dots and spots that combine to form wavy lines, especially in the middle of the page. In between there are gold-colored points. The gill covers are also patterned with wavy lines. The belly is ocher. The fins are transparent and show some dark rows of dots or lines. The upper row of bone plates on the sides of the body has 21 to 23 plates, the lower 19 to 20. Males are said to have a dorsal fin with a black tip.

Fin formula : dorsal I / 7, anal I / 6–7.

Wavy armored catfish feed on worms, small crustaceans, insects, and vegetable matter.

Systematics

The wavy armored catfish belongs to the group of the Corydoras elegans species group , which will probably be separated from Corydoras in the future and assigned to a new genus.

literature

Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
Axel Zarske: Corydoras undulatus. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 276.

Web links

Wavy armored catfish on Fishbase.org (English)

Individual evidence

↑ Markos A. Alexandrou, Claudio Oliveira, Marjorie Maillard, Rona AR McGill, Jason Newton, Simon Creer & Martin I. Taylor: Competition and phylogeny determine community structure in Müllerian co-mimics. Nature 469, 84–88 (January 2011), doi: 10.1038 / nature09660 Supplementary Information (5.9M) (PDF; 6.2 MB)
↑ Ingo Seidel: New knowledge about the relationships among armored catfish. in aquarium trade magazine No. 223 February / March 2012, Tetra-Verlag GmbH, ISSN 1437-4854

[1] Markos A. Alexandrou, Claudio Oliveira, Marjorie Maillard, Rona AR McGill, Jason Newton, Simon Creer & Martin I. Taylor: Competition and phylogeny determine community structure in Müllerian co-mimics. Nature 469, 84–88 (January 2011), doi: 10.1038 / nature09660 Supplementary Information (5.9M) (PDF; 6.2 MB)

[2] Ingo Seidel: New knowledge about the relationships among armored catfish. in aquarium trade magazine No. 223 February / March 2012, Tetra-Verlag GmbH, ISSN 1437-4854