Longitudinal ribbon tetra
| Longitudinal ribbon tetra | ||||||||||||
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Ribbon tetra ( Nannostomus beckfordi ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Nannostomus beckfordi | ||||||||||||
| Günther , 1872 |
The longitudinal ribbon tetra ( Nannostomus beckfordi ) belongs to the group of slim tetras , which are colloquially also called "pencil fish" and can reach a length of up to 6.5 cm.
distribution
The longitudinal ribbon tetra is native to the bank zone or in weed parts of the rivers of South America. It occurs in the Orinoco in Venezuela , in Guyana , Suriname , French Guiana as well as in the Brazilian states of Amapá and Pará , but also in the lower and middle Amazon basin , namely in the Rio Trombetas and the Rio Madeira as well as in the lower Rio Negro . Some specimens, which Franz Steindachner described as Nannostomus anomalus in 1876 , but which were later assigned to Nannostomus beckfordi , come from the mouth of the Rio Negro into the Amazon.
features
Longitudinal ribbon tetras have an elongated, laterally only slightly flattened, torpedo-shaped body. The head is pointed. Because of the large area of distribution, the drawing is quite variable. Usually the back is gray-green to yellow-brown, the flanks yellow, the belly whitish. A brown-black band runs along the sides, from the mouth, over the eyes to the caudal fin root or even into the middle caudal fin rays, which is lined with a narrow golden band at the top, and in some males with a red line. The fins of the females are transparent and colorless, in the males the anal fin and the front part of the caudal fin are red. In contrast to most other types of ornamental tetra , the longitudinal ribbon tetra has no adipose fin between the dorsal and caudal fin . At night the fish show two dark, wide transverse bands that disappear in daylight.
Aquaristics
The longitudinal ribbon tetra is one of the ornamental fish that can be kept in the typical community aquarium (= basin with a wide variety of species). Since it is a schooling fish, it is advisable to keep at least eight specimens of this species.
Although many other representatives of the genus need dense planting, peat filtering, dark ground, clear water and calm pool occupants for well-being, this is not a requirement for this species. However, these factors are beneficial if you want to see lasting success. Nevertheless, it is considered to be the easiest species of the genus to care for . The temperature should be between 24 and 26 ° C. We recommend a tank with an edge length of at least 60 cm in order to achieve a long life for the fish. The species can be found mainly in the middle and upper basin region of the aquarium.
Water values: pH value (acidity of the water) 6.0–7.5; Water hardness up to 20 ° dGH (German total hardness). The longitudinal ribbon tetra is considered a peaceful, calm species, which is the only one that can be socialized with livelier fish. So they are suitable for any community tank without predatory fish. The sex differences can be identified by the fullness of the females and the white fin tips of the males. All types of flake food, food tablets and occasionally fine live food can be used as food.
literature
- Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
- Hans A. Baensch , Rüdiger Riehl : Aquariums Atlas. Volume 1, Mergus Verlag, 1997, ISBN 3-88244-101-1 , p. 342.