Danio
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Zebrafish ( Danio rerio ) |
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| Scientific name | ||||||||||||
| Danio | ||||||||||||
| Hamilton , 1822 |
Danio (synonym: Brachydanio Weber and de Beaufort, 1916) is a genus of the Bärblinge (Rasborinae). The freshwater fish are found on the Indian subcontinent , on Sri Lanka and in Southeast Asia from Burma to the Malay Peninsula and on Sumatra . They live in flowing and standing water, sometimes on flooded rice fields. Some Danio species are popular aquarium fish; the well-researched zebrafish is also a model organism in genetics and developmental biology .
features
Danio species have an elongated, laterally slightly flattened body and reach a length of two cm to 8.5 cm. The fish are attractively colored, mostly in shades of blue and yellow. Females are less intensely colored than males, are plump and grow a little larger. The mouth is terminal or slightly above. It is flanked by one or two pairs of barbels . The sideline is reduced in contrast to the sideline in the genus Devario , extends at most to behind the anal fin or is absent entirely. The dorsal fin has six to seven divided rays, the anal fin ten to 13, always fewer than in the genus Devario .
Danio species are not schooling fish in the strict sense of the word, but live in social groups that live in the middle and upper areas of their home waters. A male and a female each separate briefly for reproduction.
species
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- Danio absconditus Kullander & Britz, 2015
- Danio aesculapii Kullander & Fang, 2009
- Pearl Danio ( Danio albolineatus (Blyth, 1860))
- Danio annulosus Kullander et al., 2015
- Danio assamila Kullander, 2015
- Ruby barb ( Danio choprae Hora, 1928)
- Danio catenatus Kullander, 2015
- Danio concatenatus Kullander, 2015
- Danio dangila Hamilton, 1822
- Stripe dwarf harlequin ( Danio erythromicron (Annandale, 1918))
- Danio feegradei Hora, 1937
- Danio flagrans Kullander, 2012
- Danio htamanthinus Kullander & Norén, 2016
- Danio jaintianensis (Sen, 2007)
- Island harlequin ( Danio kerri (Smith, 1931))
- Kyathit Barbel ( Danio kyathit Fang, 1998)
- Danio kysonensis Nguyen, Nguyen & Mua, 2010
- Danio Margaritatus ( Danio margaritatus (Roberts, 2007))
- Danio meghalayensis Sen & Dey, 1985
- Danio muongthanhensis Nguyen, 2001
- Spotted harlequin ( Danio nigrofasciatus Day, 1870)
- Danio quagga Kullander, Liao & Fang, 2009
- Danio quangbinhensis Nguyen, Le & Nguyen, 1999
- Zebrafish ( Danio rerio Hamilton, 1822)
- Rose danio or rose danio ( Danio roseus Fang & Kottelat, 2000)
- Danio sysphigmatus Kullander, 2015
- Danio tinwini Kullander & Fang, 2009
- Danio trangi Ngô, 2003
literature
- Günther Sterba (Ed.), Gert Brückner: Encyclopedia of Aquaristics and Special Ichthyology. Neumann-Neudamm, Melsungen u. a. 1978, ISBN 3-7888-0252-9 .
- Günther Sterba: The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
- Axel Zarske: Danio. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 318 f.
Individual evidence
- ↑ a b c d Kullander, SO (2015): Taxonomy of chain Danio, an Indo-Myanmar species assemblage, with descriptions of four new species (Teleostei: Cyprinidae). Ichthyological Exploration of Freshwaters, 25 (4): 357-380.
- ^ Das, A. (2003: 355): A catalog of new taxa described by the scientists of the Zoological Survey of India during 1916–1991. Records of the Zoological Survey of India . Miscellaneous Publication, Occasional Paper No. 208: 1-530.
Web links
- Danio on Fishbase.org (English)