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P. sumatranus mixed with bintan(?) in Nederland

Home Forums European Trade P. sumatranus mixed with bintan(?) in Nederland

Viewing 15 posts - 1 through 15 (of 17 total)
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  • #6109
    bartian
    Participant

    A Dutch shop currently has a lot of P. bintan-like fish, mixed with some sumatranus. They bought them as P. filamentosus, which doesn’t make sense at all looking at the fact there is not a single one bearing a filament. Also, these come from Sumatra, filamentosus from Borneo.

    They didn’t show much colour, so it was impossible to tell exactly what species it is. Based on the fact there are bintan-like forms near sumatranus‘ range and the blue caudal band I think it is one of those Sumatran bintan-forms.

    I’ll update this when I have more information.

    #6110
    Peter Finke
    Participant

    Bartian, that is exciting news … i f… the fish are really P. sumatranus. But I doubt it. Even sumatranus have a very small filament in the caudal fin, in both sexes (1 mm, but clearly to be seen). Additionally, the wohle colouring and the stripes on the body are somewhat different, especially the lowest faints into a very small streak. At last, most fish are slimmer than bintan-like forms, a bit reminding at parvulus and ornaticauda. (There are broader types however, too).
    The fish you describe is certainly not filamentosus but probably a bintan-like form from Sumatra. But why do you guess it’s sumatranus? This should be clearly recognizable by the structure and colours. O doubt that, not in principle, but because of your description.

    If they are sumatranus, then: buy! Buy! We lost nearly all of them in our stocks! They are most interesting: with head-up display steeper than ornaticauda!

    #6111
    bartian
    Participant

    They are indeed slimmer than the other paros (some even like parvulus, but most are higher built), they have somewhat different stripes, and their colouration is really different. They have dark reddish fins with a distinct black spot in the dorsal fin.

    What species other than sumatranus has a conspicious black dorsal spot? I only know it from sumatranus and allani, of which the latter seems very improbable.

    If they are that rare nowadays I’ll get me some. I couldn’t clearly distinguish female sumatranus, do they have colour in their fins or are they clear like bintan?

    #6112
    helene schoubye
    Keymaster

    If in a dutch shop, theres a good chance they will appear in Denmark as well, I will certainly keep a look out for them.
    Your describtion in your last post gives hope that it could be sumatranus indeed as far as I know.
    I had sumatranus for a period, unfortunately no more.

    Do you have any idea which importer ?

    #6113
    bartian
    Participant

    They’re from an Indonesian exporter, imported by the shop itself. No Ruinemans, so very small chance you’ll see them, I guess.

    #6114
    helene schoubye
    Keymaster

    No, Ruinemans would be better 🙂 you are right about that – they often end up in Copenhagen too, but you never know.
    I will keep an eye out for any new paros in town

    #6115
    bartian
    Participant

    I just got sent this: https://www.youtube.com/watch?v=2yLpQO6GHdM&feature=youtu.be

    Right in the beginning and just after halfway there are some supposed sumatranus.

    #6116
    Peter Finke
    Participant

    Right, I agree. The last fish swimming from the right to the left is probably a sumatranus male. The others are not as clear as this to be seen.
    Females in principle have the same black dot at the end of the dorsal, but often it is subdued.

    This private import might be a mix, that’s a problem. Nevertheless: P. sumatranus is very rarely traded. You should definitely buy the individuals that are most clearly to be recognized.

    And since it is a private import, Helene’s hope to meet them in Kopenhagen (or ours in Germany) is not very likely. Sorry to say.

    #6162
    bartian
    Participant

    I got me some new fish yesterday:

    No doubt possible about this being sumatranus. I got seven of them, but I found it quite difficult to distinguish female sumatranus in a tank with 200 scared Parosphromenus. I think I have two or three females. While looking for females, I also found this:

    It lacks the blue distal band in the caudal fin, which bintan normally do possess. Instead, it shows a reddish band near the caudal peduncle (it is much more intense and visible in reality). The bintan-forms I know (and the other ones in the tank) do not show that band when under stress. Also, it’s shape and size is different from the bintan I know, and it’s unpaired fins are much more rounded than my other paros’ fins (note the very short ventral fins!). I think this is interesting, because I have three types of bintan, and this one looks really different. I caught two similar looking females, so hopefully more will be visible soon.

    Please don’t mind the cyanobacteria and the fungus on the wood, I’m aware of it and hate it! It seems I have a nice, very invasive and plant-killing strain of cyanobacteria resistant to pesticide.

    #6254
    Stefanie Rick
    Participant

    Bartian, is this the one of the fish you recently bought which you mentioned today in the gunawani-thread? The stouter one with more rounded fins?

    It is a pity that nobody looked at your pictures or answered your last post. It would be interesting what the experts think – of your sumatranus and of this unknown species/form.

    #6255
    bartian
    Participant

    It’s that fish indeed. It now has more colour, and a very thin blue band in the caudal is visible at times.

    #6256
    Stefanie Rick
    Participant

    Maybe you could post another photo, showing this stronger colouration?

    #6257
    bartian
    Participant

    I tried making some, but it is afraid of my phone. It always darts away when I try to make a picture, very annoying.

    #6593
    Ed Prust
    Participant

    I got four of these too. Same shop, same batch i think.
    My tank has a lot of hiding space so i havent been able to take a pic yet. Also i have dim lighting.
    I probably have at least one male.
    First order of business: getting them big and healthy.
    Tankwater: pH=6.5, 70 Microsiemens

    #6594
    Peter Finke
    Participant

    Bartian, I could not reply earlier. The male fish in photo 2836 is without any doubt a P. sumatranus. Even the small filament in the end of the caudal is well to be seen.

    The other fish in the next picture is – I am afraid – definitely no sumatranus. I cannot say which species it is; it resembles a bit a poorly coloured anjunganensis, but it maybe quite a different form, even a hintherto unknown. I suppose, it’s a male too.

    It is very rare that shops mix different species. They probably haven’t done this in the Netherlands but they will have received the fish in a mixed bag. This is rare, too, but it happens. You should try to get some sumatranus-females, too. P. sumatranus is one of the most interesting species we know, since it is coloured in the bintan-like manner, but displays head-up similar to ornaticauda. Sometimes, it will even stand still more upright, really in an angle of 90% (defiitely vertical)!

    It would be of great importance to build-up a new stock. Several years ago, Karen Koomans from Nieuwe Pekela ha a big stock, but all are lost in the meantime.

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