[Cyprinodontiformes] Aquarium Glaser Newsletter October 16th, 2009
Segunda-Feira, 19 de Outubro de 2009 - 00:12:19 WEST
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De: Aquarium Glaser GmbH [mailto:info aquariumglaser.de]
Enviada: sábado, 17 de Outubro de 2009 01:01
Para: cyprinodon clix.pt
Assunto: [Provavel SPAM] Aquarium Glaser Newsletter October 16th, 2009
At Aquarium Glaser not only small fish for private community tanks are
stocked, but also real rarities for scientific institutions and large fish
for public aquaria and zoos.
A specimen for the latter category reached us now: a gigantic
Phractocephalus hemiliopterus, more than 80 cm long. We stocked the fish for
a Russian customer. The animal was reared by a private keeper.
Transportation of such a large fish is, however, a real quest which was
solved with a special construction on a trailer.
It took some man power to net the fish and transport it to its prepared
quarantine tank which contents several thousand litres of water. Here the
fish will stay until it goes on its far journey to its new owner in Russia.
Lexicon: Practocephalus: from ancient Greek "armour head"; hemiliopterus:
from ancient Greek "with half-smooth fin".
Text & photos: Frank Schäfer
The genus Pseudacanthicus currently comprises five described species. Three
of them are known as aquarium fish. Additionally there are 16 L-numbers
given for species of Pseudacanthicus which represent either species new for
science or have a doubtful identity.
Species of Pseudacanthicus are also known under their popular name "cactus
catfish", for the species are very spiny and it is no good idea to catch a
larger specimen with bare hands. Some species of Pseudacanthicus can reach
one metre in length, but there are other species that grow up only to 25 cm.
As a rule one must be aware that Pseudacanthicus become bigger than many
other common aquarium fish. Larger specimens are quarrelsome against
congeneers and so spacy tanks with a lot of hiding places are needed for
Pseudacanthicus. On the other hand there are reports of successful breeding
of some species in the aquarium. The fish are typical cave brooders. Male
are more robust than females (they have especially a broader and heavier
head) and have more spines during breeding season.
One of the most popular Pseudacanthicus is L114 which originates from the
middle Rio Negro basin in Brazil. This cactus cat was thought to represent
the described species Pseudacanthicus leopardus for a long time. However,
the real P. leopardus originates from the border region of Brazil and
Guyana. There are only very few catchers of ornamental fish in that region
and so we are very proud that we were successful in importing a good number
of the real P. leopardus in different sizes now. They were collected in the
Takutu river that belongs to the system of the upper Rio Branco.
Compared with L114 the fish are much flatter and have a slighly different
coloration. They can be best distinguished by the fact that in larger
specimens (around 20 cm) of P. leopardus the spots on the head are very
small or almost vanished, whereas these spots are relatively large in L114
in all stages.
For our customers: the fish have code 26480-LDA 007-3 on our stocklist.
Please note that we exclusively supply to the wholesale market.
Text & photos: Frank Schäfer
Lexicon: Pseudacanthicus: from ancient Greek, means "false Acanthicus"
(Acanthicus is another genus of Loricariids). leopardus: Latin, means "looks
like a leopard", referring to the pattern.
Pseudorinelepis sp. L95
Last week we were able to import another catfish gem: L95, a scientifically
undescribed species of the genus Pseudorinelepis, which is very closely
related to P. genibarbis.
Our specimens come from the Takutu river in the upper Rio Branco basin.
These gorgeous fishes are collected mostly in relative large specimens,
because the juveniles are not as attractively coloured. L 95 can probably
reach a maximum length of 40 cm, are imported from 15 cm length upwards and
our recently imported fish are about 20 to 25 cm long.
Pseudorinelepis are famous for their ability to swallow air. This behaviour
replaces the swimming bladder, which is reduced in Loricariids so that is
has no function anymore. Pseudorinelepis like to swim in an upside-down
postion. This is absolutely normal and no reason for concern.
The fish are omnivorous, but main emphasis is plant material.
For our customers: the fish have code 26480-L 095-5 on our stocklist. Please
note that we exclusively supply the wholesale market.
Lexicon: Pseudorinelepis: from ancient Greek, means "false Rinelepis"
(Rinelepis is another genus of Loricariids); genibarbis: from ancient Greek,
means "with a hairy cheek". omnivorous: a species that feeds on anything,
Text & photos: Frank Schäfer
Laetacara sp. "Buckelkopf" is known in the hobby for many years already. The
somewhat unusal common name (the German word "Buckelkopf" means "humphead")
derives from the feature developed by some very old males, but this happens
rather seldom. It is a typical dwarf cichlid, the males grow to a length of
about 8, the females of about 6 cm. The typical open brooders with
biparental care are easy to keep and breed.
Now the species has been formally described by F. P. Ortoni and W. J. E. M.
Costa as Laetacara araguaiae. According to the authors the species comes
from the Rio Verde in the Rio Araguaia drainage. However, aquarium
literature gives a much wider distrubition, namely the southeastern
tributaries of the Amzon river from the Tapajos to the mouth of the Amazon
and also the Xingu river.
So finally the second species of Laetacara that had to be named
provisionally by aquarists (Laetacara sp. "Orangefin" has been described
already in 2007 by W. Staeck and I. Schindler as L. fulvipinnis) has valid a
Interstingly the authors obviously inteded to describe a further species of
Laetacara and by mistake in two occasions this species is mentioned under
the name L. minuatacara (pp. 45 and 46) in the paper. However, this name
remains a nomen nudum without any validity, but clearly shows that we can
expect more new species in this interesting genus.
The original papers can be downloaded for free as pdf-files from
taeck_63-71.pdf for L. fulvipinnis and
tebrate_Zoology_59-1_Costa_03.pdf for L. araguaiae.
Text: Frank Schäfer, photos: H. J. Mayland, Aqualog archieves
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D-63110 Rodgau, Germany
Telefon: +49 (0)6106 / 690 1 0
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Managing Director: Ursula Glaser-Dreyer
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