Guinea fowl harlequin

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Guinea fowl harlequin
Danio margaritatus male.jpg

Danio Margaritatus ( Danio margaritatus )

Systematics
without rank: Otophysa
Order : Carp-like (Cypriniformes)
Subordination : Carp fish-like (Cyprinoidei)
Family : Bärblings (Danionidae)
Genre : Danio
Type : Guinea fowl harlequin
Scientific name
Danio margaritatus
( Roberts , 2007)

The guinea fowl harlequin ( Danio margaritatus ), often also Rasbora "Galaxy" or Microrasbora sp. Called "Galaxy" is a small carp fish from Myanmar and Thailand . When it was first described , the new genus Celestichthys was set up for him , but has now been assigned to the genus Danio . At that time it was only found in a relatively small area east of Inle Lake at an altitude of over 1000 m. Its maximum length is 3 cm, but more often 2 to 2.5 cm. With a preferred temperature of 20 to 24 ° C, the fish occurs in relatively cool, slightly alkaline water. The species was only discovered in 2006, first described by Roberts in early 2007, and soon appeared in aquarium stores. Its small size and bright colors quickly made it a sought-after fish in aquarium circles.

Conservation

Within just six months of its appearance in the aquarium hobby, the species became so rare that collectors could only catch "a few fish a day". In the meantime, some aquarists have successfully reproduced the species, but almost all animals currently (March 2007) commercially available are wild-caught. The British aquarium magazine Practical Fishkeeping therefore called in 2007 that only aquarists who seriously want to breed the fish (and who have the experience to do so) should buy the guinea fowl in order to reduce the pressure on the remaining wild population.

In the meantime, fishing locations in northern Thailand and other rivers in Myanmar have also been confirmed ( DATZ ). The species does not seem to be endemic to the original location as initially assumed. The distribution area is relatively large.

Sex differences and multiplication

Two male guinea fowl coarse performing an impressive dance

The sexes can be distinguished on the anal fins. The male is completely patterned, usually with a red vertical stripe between two black ones. However, there are also specimens in which the black stripes have grown together like a network and give the impression of red spots on a black background. In contrast, the females have transparent anal fins, which are only slightly colored at the base. In general, females are weaker in color than the males.

Guinea fowl coarse reproduce well even in the community aquarium, as long as they are offered high quality live food. The males perform impressive dances in which they turn their flanks towards each other and swim in a very tight circle, practically on the spot, around a common center. The female is then followed through the aquarium until the act of spawning begins, which occurs on soft, fine- feathered plants, such as. B. Java moss , expires. No spawning takes place without suitable plants.

It is very easy to multiply in a wedge tank. A 45 liter standard basin is sufficient for this. A small group of guinea fowl coarse provides regular offspring here. Up to five young fish are possible per day.

  • Males with striped anal fin

  • Females with colorless anal fin

  • Spotted variant of the male anal fin

swell

  1. ↑ Matt Clarke: Galaxy rasbora placed in new genus. (No longer available online.) Practical Fishkeeping, archived from the original on February 17, 2015 ; Retrieved February 28, 2007 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.practicalfishkeeping.co.uk
  2. ↑ TR Roberts: The "Celestial pearl danio", a new genus and species of colorful minute cyprinid fish from Myanmar (Pisces: Cypriniformes) The Raffles Bulletin of Zoology, 2007 55 (1): 131-140 (PDF; 4.9 MB )
  3. ↑ Aquarium live 02/08
  4. ↑ a b c Matt Clarke: Galaxy rasbora under threat. (No longer available online.) Practical Fishkeeping, archived from the original on February 17, 2015 ; Retrieved February 20, 2007 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.practicalfishkeeping.co.uk
  5. ↑ Matt Clarke: The next big thing: Microrasbora sp. Galaxy. (No longer available online.) Practical Fishkeeping, archived from the original on February 17, 2015 ; Retrieved February 20, 2007 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.practicalfishkeeping.co.uk
  6. ↑ Matt Clarke: Galaxy rasbora, Microrasbora sp. Galaxy. (No longer available online.) Practical Fishkeeping, archived from the original on November 7, 2011 ; Retrieved February 20, 2007 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.practicalfishkeeping.co.uk
  7. ↑ http://www.aquaristikfreaks.de/zucht-von-perlhuhnbarblinge-im-keilbecken-t52.html

Web links

Commons : Guinea Fowl ( Danio margaritatus )  - Collection of images, videos and audio files