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plesner

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Viewing 15 posts - 46 through 60 (of 64 total)
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  • in reply to: Pyrrhulina Id #347813

    plesner
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    QUOTE (Matt @ Apr 11 2012, 09:14 PM) <{POST_SNAPBACK}>
    P. lugubris is the only species in the genus described from Colombia and the types are from Barrigón, Colombia, not too far from the Río Magdalena mainstream. Anyone know what that one looks like?

    There are a couple of pictures on p. 23 (11th page of the paper) of P. lugubris in this:

    http://www.vertebrate-zoology.de/vz61-1/02…61-1_Zarske.pdf

    And there are certain similarities there too.

    in reply to: Pyrrhulina Id #347806

    plesner
    Participant

    QUOTE (kim m @ Apr 11 2012, 08:16 PM) <{POST_SNAPBACK}>
    Yes I feel for them right away!

    I’ve had a suggestion for Pyrrhulina laeta “Rio Magdalena” at another forum…not many pics on Google though.

    Oh, but there are a couple at http://www.akvarieviden.dk:

    http://www.akvarieviden.dk/fisk/Pyrrhulina_laeta-1858


    plesner
    Participant

    I’d love to read this one if it becomes available.


    plesner
    Participant

    QUOTE (Stefan @ Mar 9 2012, 11:34 PM) <{POST_SNAPBACK}>
    I’m sorry; I could not get it. http://www.uni-wuerzburg.de/?id=42039

    Decided to first ask a few livebearer enthuthiasts I know. I might get lucky.

    in reply to: Rapid And Socially Induced Change Of A Badge Of Status #347435

    plesner
    Participant

    I’d love to read this one.

    in reply to: Sex Ratio In Macropodus #347426

    plesner
    Participant

    QUOTE (Stefan @ Mar 1 2012, 06:39 PM) <{POST_SNAPBACK}>
    A combination of pH, dGH, temp and what not plays a role in that but I’m pretty sure there’s no definitive clear cut answer/solution to the ‘issue’. Trial and error seems your best option?

    Yeah, I kind of gathered as much. I just hoped to cut a few corners rather than having to do all the testing over again.

    in reply to: Sex Ratio In Macropodus #347423

    plesner
    Participant

    QUOTE (Matt @ Feb 29 2012, 08:09 PM) <{POST_SNAPBACK}>
    Hi plesner, Paepke mentions and speculates on this phenomenon in his book ‘Die Paradiesfische’ (1994). He seems to conclude there are potentially a number of factors involved, and that further study is needed.

    I can scan the relevant section for you if you like, but it is in German.

    Hi Matt.

    I just reread chapter 3.3 in ‘Die Paradiesfische’. It’s been 15+ years since I read it, so I didn’t even remember that Paepke had an opinion on this topic.

    I’m considering trying to get my hands on Schwier’s text on the same subject (which Paepke refers to), but where does one even start trying to find something like that from 1939? I’m not even sure I understand half of what’s written about that particular publication:

    Schwier, H (1939): Geschlechtsbestimmung und -differenzierung bei Macropodus opercularis, concolor, chinensis und deren Artbastarden. – Z. ind. Abst.-Vererb.-lehre. 77:291-335.


    plesner
    Participant

    QUOTE (BigTom @ Feb 18 2012, 07:29 PM) <{POST_SNAPBACK}>
    I can get it, PM me your email address.

    PM sent.


    plesner
    Participant

    I’d love to read that one too, please.

    in reply to: Belontia spp. #346298

    plesner
    Participant

    QUOTE (Matt @ Nov 29 2011, 09:11 AM) <{POST_SNAPBACK}>
    This is what happens with Ctenopoma species right?

    I’ve had Ctenopoma kingsleyae spawn three times. None of the parents seemed to care about the eggs at all.

    The morning after my first pair did breed, the male killed the female, even though they’d been together for more than 6 years while growing to a size big enough to breed. All the eggs were wiped out by fungus. A few months later, I bought a small group of young (5cm/2inch) C. kingsleyae. After almost 7 years, a pair finally decided to breed. Unfortunately none of the many thousands of eggs survived a fungal attack. A few months later they did breed again and the male killed the female shortly after. I transferred around 100 eggs to another tank. Later that same week the air pump connected to that 2nd tank stopped working and every single fry died. After trying for 15 years, I decided that was my last breeding attempt with C. kingsleyae.

    in reply to: Belontia spp. #346294

    plesner
    Participant

    QUOTE (Matt @ Nov 28 2011, 08:56 PM) <{POST_SNAPBACK}>
    Did your friend raise any Plesner? Some of the stuff I was reading today suggested the male doesn’t always build a bubblenest. Would love to know what strategy is adopted instead if this is true.
    in reply to: Belontia spp. #346256

    plesner
    Participant

    QUOTE (Matt @ Nov 25 2011, 04:44 PM) <{POST_SNAPBACK}>
    That said, has anyone kept either B. hasselti or B. signata? Looking for breeding and upkeep info please.

    I have a pair of B. hasselti in a 325 L tank along with 12 Puntius nigrofasciatus. I decided to add the barbs because the male was chasing the female a bit too much, which made her hide a lot. I keep them in ordinary Copenhagen tap water, which is rather hard (23°), slightly alkaline (pH around 7,8) at a temperature of 23-25°C. They will eat anything of suitable size. Anything about the size of mosquito larvae or smaller is ignored.

    I made a short video clip of them a short while after I’d bought them:

    Belontia hasselti video clip

    They’re still in the same tank but they’ve got different tank mates now.

    A friend of mine managed to breed a pair of them some 20 years ago in extremely soft and slightly acidic water in a 250 L tank covered on all sides in newspapers because his pair at least seemed to be easily disturbed.

    I bought four 6-7 cm Belontia signata in December 1981. Unfortunately they all turned out to be male, but the last of them survived until around february 1st 1998. Quite an impressive age for such a fish.

    in reply to: Journal Of Fish Biology (early View) #345129

    plesner
    Participant

    If possible, I’d like to see the guppy one too.

    in reply to: Ecology Of Freshwater Fish (Early View) #345128

    plesner
    Participant

    I’d appreciate a copy too.

    in reply to: Tylomelania Id #344585

    plesner
    Participant

    QUOTE (Matt @ Jul 12 2011, 09:58 AM) <{POST_SNAPBACK}>
    Papers sent, hope they’re useful.
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