[Cyprinodontiformes] Aquarium Glaser Newsletter july 16th, 2010

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Sábado, 31 de Julho de 2010 - 17:18:52 WEST

Caros colegas,


Com uma semana de atraso em relação ao previsto... aqui vai disto.

Um abraço

Miguel Andrade 


De: Aquarium Glaser GmbH [mailto:info  aquariumglaser.de] 
Enviada: Nenhum
Para: Miguel Andrade
Assunto: [Provavel SPAM] Aquarium Glaser Newsletter july 16th, 2010



Geophagus megasema


There is almost no chance that commercial importations of wild collected Geophagus
megasema will ever appear. So it is very welcome that travelling aquarium enthusiast
collect such species in areas that are ignored by professional fish collectors and
bring them home alive, which makes it possible to develope a captive bred stock.
Geophagus megasema was described scientifically by Heckels as early as 1840. However,
only very few specimens reached Europe from Bolivia since then. Moreover, the fish
were quite often mis-identified as other Geophagus species. It was only in 2006 that
a group of travelling aquarists from Austria, Germany and Switzerland were able to
import a good number of specimens of this cichlid from the Rio San Martin in Bolivia.
Soon after they were able to breed them and the species was spread in the hobby. Now
Aquarium Glaser is able to offer bred specimens of this beautiful eartheater in
perfect quality.

Geophagus megasema is a quite hardy species and can be kept even in harder water up
to 20° dGH; however, it will be not as colorful as it could be under these
conditions. If the fish are kept in soft and slight acidic water they are real
eyeburners! Breeding is also easier under these conditions, but the fish can also be
bred in harder water. Food should not be too rough for this species: flakes,
different types of frozen bloodworm, mosquito larvae, and artemia are perfect for it.

This species of eartheater from Bolivia can be kept and bred at relative low
temperatures of 25 to 28°C. Geophagus megasema is a larvophilous mouthbrooder. The
larvae are taken in the mouth by both parents as soon as they leave the eggs.
Parental care is taken by both sexes in an equal way.

For our customers: the fish have code 678614 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Geophagus: ancient Greek, means "eartheater". megasema: ancient Greek, means
"with a big sign". This is referring to the large lateral spot.

Text & photos: Thomas Weidner


Corydoras sp. "New Panda" CW51 


Corydoras sp. "New Panda" from Colombia is so far the most spectacular new
importation of the year. Hans-Georg Evers, expert for Corydoras, guesses that the
species may be found in the Rio Vaupes system, but still no assured information on
that topic is available. It is very conspicious that the spot below the dorsal fin
differs individually very much in size. In any case this is an extreme beautiful
species. There are already first reports on a successful spawning in the cory scene.
If it is possible to breed this species on a regular basis it will for sure have a
great career as an ornamental fish.

Text & photo: Frank Schäfer


Panaqolus sp. Pucallpa 


Once more we were able to import another quite cute suckermouth catfish from Peru -
from Pucallpa to be more precise. Again, this species belongs to the closer Panaqolus
changae relationship (LDA 26, L206, L226), as it does the "New Zebra Pleco" we
introduced to you last week (http://www.aquariumglaser.de/en/archiv.php?news_id=289).
Especially the young ones are colored very nice, adults become more dull in
coloration. A typical feature of this special variety seems to be the spotted caudal,
which can be observed in all stages of age. The biggest ones we saw so far were about
7 cm long.

For our customers: the fish have code 275351 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Panaqolus: diminuative of Panaque. Panaque is another genus of suckermouth
catfish. changae: in memory of Fonchii Fang, who was integrated in the discovery of
the species. She died by accident on the Amazon.

Text & photos: Frank Schäfer


Aphyolebias peruensis 


This species from Peru represents one of the most beautiful species of killifish. It
was known in the hobby for quite a long time under the name of Pterolebias peruensis.
They are typical seasonal fishes. In the aquarium, they might become up to 1.5 years
old, but in the wild they will never reach such an age. The species is restrictet to
primary woods in the north of Peru. The intraspecific variation is very high, and it
is possible to distinguish each male from an import from another by coloration and


These fish are bottom divers and spawn in the ground. The eggs need about 10 months
to develope. Although keeping and breeding of the species is not really difficult, it
takes a lot of patience to be successful.

Killifish do not fit for community tanks in general, because they cannot show to
advantage there. A. peruensis do not like flake food. Thus they should be fed with
frozen and live food.

For our customers: the fish have code 342803 on our stocklist. Please note that we
exclusively supply to the wholesale trade.

Lexicon: Apholebias: from the anterior part of the word Aphyosemion and from Lebias;
Aphyosemion is a genus of killifish from Africa, which is somewhat similar to
Aphyolebias. Lebias is an ancient fish name, which was formerly used for what is now
Aphanius. The word is part of many genus-names of South American killifish.
Pterolebias: from ancient Greek for "wings" and from Lebias: "winged Lebias". Lebias
is an ancient fish name, which was formerly used for what is now Aphanius. The word
is part of many genus-names of South American killifish. peruensis: means "comes from

Text & Photos: Frank Schäfer


Tatia dunni 


Once more we were able to be the first who imported this pretty driftwood cat. The
identification of Tatia species is not that easy. Although there is a very recent
revision of the genus available, the species concept used there reflects only few
aspects of coloration. So currently fish of very different coloration are lumped
under the same species name. Our first try to identify the fish went wrong though and
we listed them erraneously under the name of Tatia cf. gyrina initially.


Tatia dunni was described in 1945 from Colombia. From 1973 to 2008 it was regarded to
be synonymous with T. intermedia. T. dunni is widely distributed: there are records
of the species from Brazil, Ecuador, Colombia, and Peru. However, the fish look quite
different in distinctive populations. Our Peruvians, which were collected near
Pucallpa and were named by the exporter "padre abad", differ individually regarding
pattern, but have all in common the golden stripe over the back as well as the bright
golden bar before the dorsal fin.


Tatia dunni belongs to the larger species of the genus. It may become longer than 12
cm. However, sexual maturity starts at a much smaller size. In museum material, males
were found to have the anal fin modified to a copulation organ from about 7 cm
standard length (that is without caudal fin) on. This modification of the male´s anal
fin is typical for all driftwood cats.

For our customers: the fish have code 295693 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Tatia: dedicated to Charles Tate Regan, who was ichthyologist at the British
Museum. dunni: dedication name. gyrina: from the ancient Greek word for "tadpole".
intermedia: Latin, means "in between". This means that the characteristics of the
species are intermediate between the characteristics of two other species.

Text & photos: Frank Schäfer

Literature: Sarmento-Soares, L. M. & R. F. Martins-Pinheiro (2008): A systematic
revision of Tatia (Siluriformes: Auchenipteridae: Centromochlinae). Neotropical
Ichthyology 6 (3): 495-542



Issue No 90 of AQUALOGnews, English version, is now available as free download via
http://aqualog.de/news/alle_news.htm. Enjoy! 




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