[Cyprinodontiformes] Aquarium Glaser Newsletter June 19th 2009

Terça-Feira, 23 de Junho de 2009 - 00:30:27 WEST

Prezados colegas,

Como sempre, nesta edição encontramos algumas curiosidades interessantes. 

Há nesta “ newsletter “ sem dúvida muitos motivos para qualquer
aquariofilista ficar interessado.

Um abraço a todos

Miguel Andrade

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De: Aquarium Glaser GmbH [mailto:info  aquariumglaser.de] 
Enviada: sábado, 20 de Junho de 2009 01:01
Para: cyprinodon  clix.pt
Assunto: [Provavel SPAM] Aquarium Glaser Newsletter June 19th 2009

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Tanichthys micagemmae – Jewel minnow

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Tanichthys micagemmae, male

Currently two species f the genus Tanichthys are known in the hobby: the
White Cloud Mountain minnow Tanichthys albonubes, and the Jewel Minnow, T.
micagemmae. The White Cloud is available exclusively as bred specimens,
wheras the Jewel minnows is also imported as wild collected fish. The Jewel
minnow has been discovered in 2001 in Central Vietnam.

The maximum size of the Jewel minnow is less than 3 cm, so the species is an
ideal fish for the so-called nano-aquaria. Males and females can easily
become distinguished by the shape and colour of dorsal and anal fin, which
are much larger and more colorful in males.

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Tanichthys micagemmae, female

The Jewel minnow should be kept and bred in schools. The fish are completely
peaceful among any other fish. If they are kept in a one-species tank no
additional heater is necessary in indoor aquaria. The species spawn in fine
plant material. The offspring swims close under the water surface. If the
parental are fed properly and with a good variety of food, usually some of
the young survive even in the community tank (surface plants are necessary,
especially Riccia).

Tanichthys micagemmae is a real gem and every fishkeeper should have tried
it. For our customers: the fish have code 459002 on our stockliste. Please
note that we exclusively supply to the wholesale market.

Text & photos: Frank Schäfer

Lexicon: Tanichthys: „fish of Tan“, dedicated to Tan Kam Fei who discovered
the species. Albonubes: latin for „White Clouds“, refers to the White Cloud
Mountains in China, where the species was discovered. Micagemmae: from latin
micare „sparkle“ and gemma „gem“, eg. „sparkling gem“.

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Colorful Great Ramshorn snails 

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The Great Ramshorn snail (Planorbarius corneus, formerly known as Planorbis
corneus) is kept in aquaria and garden ponds since the beginning of the
hobby. They grow to a relatively large size (maximum 4 cm) and do not touch
living plants. They feed exclusively on algae and detritus. This snail has a
red blood that contains hemoglobin. Thus albinos have a bright red body.

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The wild type of the Great Ramshorn is imported each year from eastern
Europe for pond keepers. Now and then these shipments contain also albinos.

Now breeders in Singapore were successful in breeding full red and blue
sports of this snail. For the first time we are now able to offer these
attractive animals.

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Keeping and breeding of the Great Ramshorn is extremely easy. As they are
hermaphrodites, two animals are in any case a pair. They breath through
lungs and so at least a part of the oxygen they need is taken from the air.
The maximum age they can reach is about 3 years, but in the wild only very
few specimens get that old. The water temperature should be between 12 and
25°, hardness should be at least 10°KH (more is better), the pH can be
between 6.5 and 8.5.

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For our customers: the wild Great Ramshorn has code 879403, the bright red
486522, the blue one 486512 on our stocklist. Please note that we
exclusively supply the wholesale market.

Text & photos: Frank Schäfer

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Axelrodia riesei – Ruby tetra 

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Once more we were able to import a good number of beautiful Axelrodia riesei
from Colombia. These tiny little fish – wild collected animals are sexually
mature at a size of 1.5-2 cm, in aquaria they can reach a size up to 3 cm –
fully deserve their popular name – they are brillant ruby red. The species
is endemic in the upper Rio Meta region.

One should keep these fish in a one-species tank. If necessary, only small,
peaceful species should be added as tankmates. Ruby tetras are not schooling
fish, but should nevertheless be kept in groups, for they build up a
hierarchy and this species-specific behaviour can not be lived out when
congeneers are missing.

The beautiful ruby red coloration is in part differing individually – among
a shipment of ruby red ones are also always some more yellowish specimens.
In part it is also a consequence of the aquarium settlement. Ideally the
tank for Ruby tetras is only slightly illuminated, has dark ground, many
hiding places, the surface is covered with floating plants and the water has
a deep brown-black colour due to alder“cones“ (female catkins of Alnus
glutinosa). The water should be soft and acidic (less than 10°GH, pH between
4.5 and 6.5), the temperature can be between 20 and 26°C. Ruby tetras feed
on any usual fishfood, but feeding them with Cyclops will intensify the red
colours. 

For our customers: the fish have code 209912 on our stocklist. Plaese note
that we exclusively supply to the wholesale market.

Text & photo: Frank Schäfer

Lexicon: Axelrodia: dedication name, dedicated to Herbert Axelrod. Riesei:
dedication name, dedicated to W. Riese, who collected the type specimens
together with H. Axelrod.

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Nannostomus sp. „Purple“ has been scientifically decribed as N.
rubrocaudatus!

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A strikingly beautiful Nannostomus species from Peru, known in the trade
under the names Nannostomus marginatus „Purple“ or N. marginatus „Red“ for
some time already, has now been described scientifically by Axel Zarske from
Senckenberg Naturhistorische Sammlungen Dresden, Museum für Tierkunde as
Nannostomus rubrocaudatus. The type specimens originated from Peru and were
imported by our company.

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At the first glimpse the species reminds one on the popular N.
mortenthaleri, but a closer look shows clear differences. For example, in N.
mortenthaleri the belly is always white, in N. rubrocaudatus never.

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Both species have a well developed sexual dimorphism and dichromatism.
Although only the males show red colours over the whole body, the intensity
of this coloration depends much on the mood of the fish. However, the
females´ ventral fins have a different shape from the males´ ones, so it is
always possible to distunguish the sexes.

The maximum length of N. rubrocaudatus is 3 – 3.5 cm, but they should not be
kept in small aquaria. The males fight quite fiercly and without enough
space for the looser to flee there might occur even injuries. Otherwise the
keeping of the fish is complication free.
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The natural distribution is in Peru, Prov. Loreto. Here the fish is
collected commercially in the small village Saramirisa at the banks of the
Maranon (the upper Amazon river) between the rivers Morona and Santiago. The
fish live beween twigs and can be collected only piece by piece, thus the
realtive high price in the trade. Mass-collecting like in many other species
of Nannostomus, where thousands of specimens can be cought with only one
netting, are not possible in N. rubrocaudatus and N. mortenthaleri.

The scientific paper can be downloaded for free under
http://globiz.sachsen.de/snsd/publikationen/vertebrate-zoology/vz59-1/02_Ver
tebrate_Zoology_59-1_Zarske.pdf

For our customers: Nannostomus mortenthaleri has code 272256, N.
rubrocaudatus 272264 on our stocklist.Please note that we exclusively supply
the wholesale market.

Text: Frank Schäfer, photos: Frank Schäfer and Erwin Schraml/Aqualog
archieves

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...and please do not forget to visit our homepage
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Aquarium Glaser GmbH
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D-63110 Rodgau, Germany
Telefon: +49 (0)6106 / 690 1 0
Telefax: +49 (0)6106 / 690 1 11
Email: info  aquariumglaser.de 

Managing Director: Ursula Glaser-Dreyer 

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Registernummer: HRB 2 1967
Umsatzsteuer-Identifikationsnummer according § 27 a Umsatzsteuergesetz: DE
113530316 

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