[Cyprinodontiformes] Aquarium Glaser Newsletter June 3rd, 2011

Sexta-Feira, 17 de Junho de 2011 - 21:57:42 WEST

Caros colegas,

Enquanto a Practical Fishkeeping publicou hoje mais um número e me complicou as
contas de ontem, esta é a penúltima edição da newsletter da GLASER ( por enquanto ).

Este fim-de-semana actualizo os envios.

Chamo apenas a vossa atenção para a miniatura Brachygobius aggregatus, um mini peixe
indicado para um nanoaquário interessante.

Quanto à proposta Pimephales promelas para os detentores de lagos de jardim,
parece-me promissor, embora tenhamos na nossa fauna pequenos Ciprinídeos endémicos
mais interessantes. 

Um abraço

Miguel Andrade 

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De: Aquarium Glaser GmbH [mailto:info  aquariumglaser.de] 
Enviada: Nenhum
Para: Miguel Andrade
Assunto: Aquarium Glaser Newsletter June 3rd, 2011

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Pimephales promelas wild colored & gold

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This tiny, hardly 10 cm long species originates from North America. The overall
coloration is similar to that of the European minnow (Phoxinus phoxinus) in its
eclipse plumage, thus the popular name "Fathead minnow" was chosen for the fish.
However, there are important differences regarding life history between the two
species.

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While the European minnow is a stenoecious fish that needs cool and oxygen-rich
environments, the fathead minnow can be found in a rich variety of habitats and is
one of the most undemanding coldwater fishes at all. Water temperature may be between
4 and over 30°C. The fish can be found as well in cool and clear springs as in muddy
and warm pools. As Pimephales promelas is widely used as bait, it can be found in
most parts of North America.

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This opportunism makes the fathead minnow an ideal fish for small garden ponds. The
golden sport of the fish is in fact the only "goldfish" that can be kept with a good
conscience in such miniature pools. Here the fathead minnow is very useful as it
feeds on mosquito larvae. However, in regions with winter temperatures below 0°C the
fish have to be hibernated in a cool and dark, but frost free bucket or aquarium. In
large ponds that are deep enough and do not freeze to the bottom in winter the hardy
fish can also hibernate in the pond.

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Pimephales promelas is also a very interesting and easy to keep aquarium fish. Males
develop odd stingy warts during the breeding season and become almost black. The
species belongs to the rare cyprinids that care for the brood. The eggs are laid
under or on roots, stones etc. and the male guards them until the fry swims free.
Thus it seems very likely that the warts on the head are somehow connected with the
broodcare. Maybe the males use them in a similar matter against potential eggfeeders
as cattle do with their horns against a potential aggressor.

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For our customers: the wild colored fish have code 870014, the golden sport code
870004 on our stocklist. Please note that we exclusively supply the wholesale trade.

Lexicon: Pimephales: abbreviation of the ancient Greek Pimelecephales which means
"fat head". promelas: from ancient Greek, means "black ahead". Phoxinus: a name used
for a river fish in ancient Greece; it is not identifiable nowadays anymore.

Common name: Fathead minnow

Text & photos: Frank Schäfer

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Brachygobius aggregatus - one of the smallest fishes of the World 

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All species of bumblebee gobies (Brachygobius) are small or very small fishes. The
debate which is the smallest fish of the world (and coincidently the smallest
vertebrate of the world) is still going on; however, it is quite difficult to decide,
whether it makes sense to debate about differences of tenth of millimeters in live
organisms. May this be as it wants: we are proud to present to you one of the
smallest species of fish at all, which we were able once more to import from Vietnam:
Brachygobius aggregatus.

The males of this tiny bumblebee goby become (at least in the wild) about 10 mm long,
females 15 mm. It may be that they grow a little bit larger under aquarium
conditions, but this does not matter at all. 

Brachygobius aggregatus is a freshwater goby and very easy to keep. It is absolutely
undemanding regarding water chemistry. Medium hard water and a pH around 7 may be
ideal. The water temperature may be between 18 and 28°C. Fishes of that size are best
fed with live brine shrimp nauplia (Artemia). Of course they feed also happily on any
other type of live and frozen food, but live food is often difficult to obtain and
frozen food difficult to dose. Thus the easy to breed brine shrimp nauplia are the
best choice. It is no problem to feed the Brachygobius aggregatus exclusively with
this food.

For our customers: the animals have code 407101 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Brachygobius: from ancient Greek, means "short Gobius"; Gobius is another
genus of goby. aggregatus: Latin, means "aggregate", for the fish were found to be
schooling.

Suggestion of a common name: Mekong dwarf bumblebee goby, for there is a scientific
investigation going on, whether the Mekong species (which we have currently imported)
is really identical with B. aggregatus, which is described from the Philippines.

Text & photos: Frank Schäfer

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Hasemania sp. Orange 

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After a long time we were able now to import once more this beautiful tetra from
Peru. It was not possible so far to place it in a known genus or described species.
We chose the name "Hasemania" only because the basic coloration of the fish is
somewhat reminescent to that of the well known silvertip-tetra (Hasemania nana).
However, our new fish cannot belong to genus Hasemania due to its adipose fin which
is always lacking in Hasemania.

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The males are extremely attractive due to their brass-yellow to copper-red shine on
the body, the brillant red spots on the caudal peduncle and the white fintips. The
females are a bit duller in coloration, but also very nice fish.

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Keeping these new fish is very easy and can be compared with other, well known small
tetras (maximum length in our fish: 3-4 cm).

For our customers: the fish have code 225453 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Hasemania: dedication name for J. D. Haseman. nana: Latin, means "dwarfish".

Suggestion of a common name: Peruvian brass tetra

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Issue 96 of AqualogNews is now available for free as a PDF via www.aqualog.de
<http://www.aqualog.de/> . Enjoy! 

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...and please do not forget to visit our homepage <http://www.aquariumglaser.com/en/>
to get weekly updates !

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Aquarium Glaser GmbH
Liebigstraße 1
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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