[Cyprinodontiformes] Flexipenis vittatus - Aquarium Glaser Newsletter October 8th, 2010

[www.viviparos.com]

Caros amigos,

 

Lamento não vos ter enviado logo no Sábado esta interessante notícia.

Não é muito vulgar termos um ovovivíparo selvagem anunciado pelo que aqui vai uma
dessas raras oportunidades.

Flexipenis vittatus é uma espécie que muito aprecio mas impossível de manter neste
momento em que só posso manter espécies compatíveis com o nosso clima.

Caso contrário esta " Gambusia " estaria na " mira " da minha encomenda ( dependendo
do preço ).

Se a vossa casa tiver a mesma climatização do que a minha 17ºC a 28ºC este é um dos
peixes ideais para manter sem qualquer aquecimento adicional, pois não está muito "
fora de casa " entre os 15ºC e os 29ºC, embora as temperaturas muito elevadas
curiosamente sejam menos apreciadas do que as mais frescas.

Não é um peixe fácil de reproduzir em aquário ( como qualquer verdadeira Gambúsia ),
mas ao ar livre no Verão torna-se mais prolífico do que a Gambusia pucnticulata que
já mantive durante alguns anos.

Um abraço

Miguel Andrade 

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De: Aquarium Glaser GmbH [mailto:info  aquariumglaser.de] 
Enviada: Nenhum
Para: cyprinodon  clix.pt
Assunto: [Provavel SPAM] Aquarium Glaser Newsletter October 8th, 2010

 


 
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Biotoecus opercularis

 
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This fish probably represents the most interesting species of dwarf cichlids from
Amazonia. Currently we were able to import it once more. B.opercularis is for sure
not demanded due to its coloration. As typical sand cichlids they do not have pop-art
colours, but shining pastel shades. The same phenomenon can be found in the sand
dwelling cichlids of Lake Tanganyika. Nevertheless well adapted animals are really
beautiful. Moreover our recently imported specimens (they came via Manaus) have
brilliant orange ventral fins.

 
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However, the aquarist's interest in these fishes is not due to the attractive
appearance of the fish, but due to their unique breeding behaviour. Every enthusiast
should have once in a lifetime observed the male Biotoecus building up a hill from
fine sand. Once this hill is erected, the male digs a pit and in this pit the fish
spawn. No other species of cichlid from South America does even show a similar
behaviour.

For our customers: the fish have code 634492 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Biotoecus: ancient Greek, means "house of life". The authors of the genus
believed Biotoecus to carry their young in their gills. opercularis: refers to the
distinct black mark on the gill cover (Latin: operculum).

Suggestion of a common name: Sandhill dwarf cichlid

Text & photos: Frank Schäfer

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The crystal rainbow tetra has been described: Trochilocharax ornatus 

 
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This tetra is again a species new to science, and was firstly imported by our company
in April 2003, from Peru. Recently we were able to import it again. It has
provisionally been designated as "Heterocharax sp. - Orange-tailed glass tetra", or
"crystal rainbow tetra". Sometimes is was also named "Tyttocharax sp.".

Now the species has been described scientifically by A. Zarske who also erected a new
genus for the fish. The paper can be downloaded for free under
http://www.vertebrate-zoology.de/vz60-2/01_Vertebrate_Zoology_60-2_Zarske.pdf.

 
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Depending on the lighting, these barely 2 cm long jewels are shimmering blue or
transparent. This dwarf tetra is extremely lively and has so far proved very amenable
to aquarium life.

Males and females can easily be distinguished from each other, for the males have a
prolonged dorsal fin and colourful ventrals.

For our customers: the Fish has code 258333 on our stocklist. Please note that we
exclusively supply the wholesale trade.

 
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Lexicon: Heterocharax: means "different Charax". Charax is another genus of tetra.
Trochilocharax: derived from the scientific family name for hummingbirds,
Trochilidae, which is formed from the ancient Greek word "trochilos", used by
Aristotle for a small bird. ornatus: Latin, means "decorated". Tyttocharax: ancient
Greek, means "tiny charax". 

Text & photos: Frank Schäfer

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Flexipenis vittatus 

 
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Once more we are able to offer a beautiful dwarf livebearer that proofed to be a bit
problematical in respect of breeding - not keeping! - in a long time sight under
traditional aquarium conditions. However, under the open skies of Southeast Asia they
breed pretty well.

Flexipenis vittatus is also often placed in Gambusia. Males become 2.5 - 4.5 cm,
females 4 - 6 cm long. In nature, this livebearer inhabits Mexico (Atlantic slope).

 
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In contrast to Gambusia Flexipenis has a highly developed courtship display,
meanwhile the males present their pretty yellow-black dorsal fins in a very
attractive way. It is wise not to keep these fishes year-in year-out at too high
water temperatures. In living rooms no extra aquarium heater is necessary.
Temperatures may lie between 18 and 26°C.

For our customers: the fish have code 415073 on our stocklist. Please note that we
exclusively supply the wholesale trade.

Lexicon: Gambusia: derived from the Cuban term "Gambusino" for something unimportant.
Flexipenis: means "with pliant sexual organ". vittatus: Latin, means "striped".

Suggestion of a common name: Small flag livebearer, Blackline mosquitofish

Text & photos: Frank Schäfer

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