Is This Fish Commonly Traded?

[Fella]

http/www.akvarius.no/text.cfm?id=1190

These guys look great, but I only speak english so sadly can't get the jist of whats being said on the site. I'll email the site owners anyways, but has anyone kept these, or know anyone that has? I've never seen them in an LFS, are they not traded in the uk, or no longer traded in the UK? I'm guessing there is quite a possibility that they could be brackish.

Many thanks in advance!

 

[OohFeeshy]

Doesn't seem to be overly common, Fishbase says http/filaman.ifm-geomar.de/Summary/Speci...ry.php?id=17165 but it's pretty similar to most 'FW flounders' which are indeed brackish.

 

[Lateral Line]

It is a freshwater flounder species.

I speak Norwegian, was there anything in particular you wanted from that site?

 

[Fella]

It is a freshwater flounder species.

I speak Norwegian, was there anything in particular you wanted from that site?

Wow that's ace. Is it the same species listed in the fish index? They look quite different. Is it definitely brackish or is it truly freshwater as the name would suggest?

if you could give the rough jist of this I'd be very grateful!

Cynoglossus feldmanni (Ferskvannsflyndre)

Cynoglossus feldmanni er en ferskvannsflyndre som finnes i ulike elver i Asia. f.eks. Mekong.. Våre var ca 8cm lange men de kan i vill tilstand bli opptil 25 cm. Flyndrene vi ble trolig viltfanget i Thailand. De er helt harmløse og stort sett usynlige siden de som regel gjemmer seg i sand. Ellers kan de også henge på akvarieglasset som en sugemalle.

I naturen lever de i elver hvor de spiser bunndyr. Hos oss så de ut til å like reker skåret i småbiter.

Vi hadde disse først i en 112-liter sammen med bl.a. sommerfuglciklider og corydoras aeneus, men de ble bitt av ciklidene og vi måtte flytte de til et lite plastkar mens vi venter på et nytt kar med sandbunn. Det ser ut til at de stoler så mye på at er usynlige at de ikke forsøker å rømme når de blir plukka på.

Ved flytting presterte forøvrig den ene flyndren å hoppe ut av karet og falle ned en hel etasje og lande på gulvet i entréen! - Den overlevde!

Dersom du har mer informasjon om disse, hører vi gjerne fra deg!

Don't worry about translating it all, just any parts which are relevant!

Many thanks!

Craig

 

[nmonks]

Craig,

Cynoglossus feldmanni is not commonly traded. The only 'common' freshwater (brackish water) soles are species of Brachirus from Asia and Achirus and Trinectes from the Americas. I have seen Cynoglossus feldmanni offered only once in the UK over twenty years of fishkeeping. They were in the Waterlife store out by Heathrow, and about 15 cm long.

Schaefer (in the Aqualog book on brackish fish) insists that these are freshwater fish although they do need hard, alkaline water. They reach about 25 cm long. Maintenance is as for other freshwater soles: sandy substrate, plenty of oxygen, live or frozen foods offered at night, etc.

A useful Japanese site is this one. You may need to run it through BabelFish or similar, if you don't speak the lingo.

Cheers,

Neale

 

[Lateral Line]

The Norwegian article says...

Cynoglossus feldmanni is a freshwater flounder found in many rivers in Asia, for example the Mekong. It/they was/were 8cm long but can in the wild grow up to 25cm. The fish are wild caught in Thailand. They are harmless and largely invisible since they, as a rule, hide themselves in the sand. They can also hang on the aquarium glass in the same way as a sucking catfish.

In the wild, they live in rivers where they eat benthic animals. With us, they liked prawns/shrimp cut in small pieces.

We had the first in a 112 liter together with dwarf cichlids and Corydoras aneus, but they were bitten by the cichlids and we had to move them to a 1 liter plastic bowl while we wait for a new tank with a sand base. It appears they believe they are invisible and don't try to flee if touched.

Whilst moving them, one of the flounders jumped from it's bowl and fell a whole storey, (from the first floor to the ground floor), down to the lobby floor - it survived!

If you have any more information on these, we woul dbe glad to hear from you.

 

[Fella]

Wow, thank you! They sound really excellent, it's just a shame they're not traded. Thanks for translating the article.

I'll keep an eye out for them, but at once in 20 years, I wont get my hopes up!