Magnificent headstand
| Magnificent headstand | ||||||||||||
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Magnificent headstand ( Anostomus anostomus ) |
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| Anostomus anostomus | ||||||||||||
| ( Linnaeus , 1758) |
The anostomus anostomus ( Anostomus anostomus ) is a freshwater fish of the family of anostomidae (Anostomidae), which in northern South America in the mid and upper Amazon basin , the basin of the Orinoco and in Guiana and Surinam occurs. The species is the type species of the genus Anostomus .
features
The splendid headstand is 16 to 18 cm long and has an elongated body that is only slightly flattened on the sides. The color is characterized by three dark green, dark brown to brown-black longitudinal stripes that extend from the head to the base of the tail and are separated from each other by two bright yellow to whitish-gray longitudinal stripes. The fins, especially the dorsal and caudal fins, are bright red or the base is red and the distal fin end is transparent or yellowish. The throat and the region above the pelvic fins are purple to purple in color. The anal fin can have a black border in front. Very old animals are almost a single color, dark brown. Males are smaller and more elongated than females.
In addition to the nominate form , two other subspecies have been described, Anostomus anostomus longus from the upper Amazon region is said to be slimmer, Anostomus anostomus brevior from Guyana has a taller body, therefore more scales in a transverse row and a longer snout.
- Fin formula : dorsal 3–4 / 9–10, anal 3 / 7–8
- Scale formula 38-43 (mLR)
Way of life
Magnificent headbirds feed primarily on plants, as well as worms, crustaceans and insects. The reproduction is so far little known. The fish should spawn in dense vegetation and the males should stay near the spawning site after spawning. Adult animals kept in aquariums are often quite incompatible with one another.
literature
- Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
- Axel Zarske: Anostomus anastomus. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 55.
Web links
- Anostomus anostomus on Fishbase.org (English)