Mylossoma
| Mylossoma | ||||||||||||
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Mylossoma areum |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Mylossoma | ||||||||||||
| Eigenmann & Kennedy , 1903 |
Mylossoma ( Greek mylax, Gen. mylakos 'millstone', sōma 'body') is a genus of large, disc-shaped saw tetra from South America . Mylossoma species occur in tropical South America, east of the Andes in the basins of the Amazon , the Orinoco , in the upper basin ofthe Río Paraguay and Río Paraná, and in the catchment area of Lake Maracaibo . The freshwater fish feed mainly on plants.
features
Mylossoma - types 20 to 28 centimeters long. Your body is high back, heavily compressed on the sides and has a broadly curved stomach profile. Your scales are small. They differ from the genera Metynnis and Myleus by the lack of a fin spine in front of the dorsal fin. Their dorsal fin is relatively short with less than 19 rays , the anal fin is long, with more than 35 rays. It is wider in the last third, giving it a triangular shape. In contrast to the lobed widening of the caudal fin of the Metynnis males, this is not a gender difference, but occurs in both sexes. The caudal fin is large and only slightly indented. There is a short adipose fin that is never supported by a fin ray. Adult fish are uniformly silvery, young fish have a dark, circular spot on the sides of the body. They are disc-shaped, while the adults stretch a little.
species
- Mylossoma acanthogaster (Valenciennes, 1850)
- Mylossoma albiscopum (Cope, 1872)
- Golden millstone tetra ( Mylossoma aureum ) (Spix & Agassiz, 1829)
- Mühlsteinalmler ( Mylossoma duriventre ) (Cuvier, 1817)
- Mylossoma unimaculatum
Mylossoma species are used locally as food fish.
literature
- NTB Mateussi, C. Oliveira, CS Pavanelli, CS (2018): Taxonomic revision of the Cis-Andean species of Mylossoma Eigenmann & Kennedy, 1903 (Teleostei: Characiformes: Serrasalmidae). Zootaxa , 4387 (2): 275-309.
- Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
- Günther Sterba (Ed.), Gert Brückner: Encyclopedia of Aquaristics and Special Ichthyology. Neumann-Neudamm, Melsungen u. a. 1978, ISBN 3-7888-0252-9 .
- Axel Zarske: Mylossoma. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 667.
