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BillT

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Viewing 4 posts - 151 through 154 (of 154 total)
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  • in reply to: Danio kyathit vs. D. quagga #350084

    BillT
    Participant

    Nice pictures. Interesting question. How would you confirm the species ID?

    Color and stripes, morphology?

     

    I went back and looked at the paper where quagga is described: Kullander, Liao and Fang. (2009). Danio quagga, a new species of striped danio from western Myanmar (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwaters, Vol. 20, No. 3, pp. 193-199 (available on the web I think).

    They distinguish it from the spotted form of kyathit from quagga by the stripes vs spots and also by the barbel length. I have found some pictures good for looking at barbel length. The quagga picture above has shorter barbels then the spotted kyathit in the above post, which conforms to the description. The few pictures of a stripe form of kyathit I have do not show the barbels well. Presumably the barbels on the striped kyathits should be similar to those of the spotted.

    Other distinguishing features mentioned in the article are a variety of morphological length measurements (% of SL) most of which are overlapping distributions. There are slight differences in head length and pec fin length (quagga smaller for both). To me they both these comparisons look appropriate in the pictures.

    Branched anal fin rays are supposed to be 12 or 13 in quagga and 13-14 in kyathit. I counted 14 in the spotted kyathit above and 12 in the striped fish but the front of the anal fin is not entirely clear.

     

    It would be nice if we could get some of these fish in the US.

    in reply to: Danio cf putaoensis “mini putao danio” #350036

    BillT
    Participant

    I e-mailed Anthony.

     

    He thinks they are wild from Putao but will check with the vendor to see if anything else is known.

     

    Also, they would not be what i think of as a typical “balloon” type of mutant. They are very thin (side to side), similar to an angelfish.

    in reply to: Danio cf putaoensis “mini putao danio” #350033

    BillT
    Participant

    Thanks Matt.

     

    These are the theories I have heard about these fish:

    a deformed fish (perhaps a runt?)

    a hybrid (first post)

    and yours of a selectively bred short body form

     

    I hope to be able to breed them. If I can than I would not expect them to be some weird hybrid since most Danio hybrids are not fertile. Devarios maybe be different though.

     

    I would be surprised if someone in Myanmar has selectively bred a short body version rather than just grabbing some wild fish, but who knows where they really come from? Selective breeding however would explain their boldness (but is not required) and might make them easier to breed (good for my purposes).

     

    Of course my previous experience at being wrong before applies to all this, but speculation is fun and directs planning which drives action.

    in reply to: Danio cf putaoensis “mini putao danio” #350024

    BillT
    Participant

    I got some of these a little more than a week ago, indirectly from the same source, because I am interested in small Devarios.

    To me they look like a Devario not a Danio.

    Here are some pictures I took when I got them:

    mini-Putao-Danio-1.jpgmini-Putao-Danio-2.jpgmini-Putao-Danio-3.jpg

     

    They are small. They vary a bit in size and color. The last picture is of one of the larger ones. It is in front of a ruler which is 1.25″ wide (3.175 cm). I was thinking they were not mature, but I have been feeding them well and they some are fattening up as if they might be developing some eggs. I am hoping to breed them eventually.

     

    They are in a tank with a few Danio kyathit (spotted version) and in this situation they are more on the bold end of the bold to timid behavioral axis (which I like because I can see them easily).

     

    Putao is a place name, a town way north in Myanmar (AKA Burma). Wikipedia (http://en.wikipedia.org/wiki/Putao) says the air temp varies between 6.9˚C (44.4˚F) and 29.3˚C (84.7˚F) and that it gets a lot of rain in Monsoon months. This would seem to be the same area that the recently described Danio flagrans.

    I really dislike these common names (such as mini Putao Danio), but if something is not described scientifically I guess that is all you have to go by. I believe a lot of non-scientific names are generated by the people sending the fish out to the rest of the world for the purpose of driving sales through a unique or catchy name. It seems obvious to me that it is not of the Danio genus. Makes me wonder if they really are from Putao or if someone just wants to take advantage of interest in things “Putao” due to the recent description of Danio flagrans from there.

     

    I would certainly be interested in hearing other people’s opinions about these fish.

Viewing 4 posts - 151 through 154 (of 154 total)

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