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Sewellia marmorata

Home Forums Fresh and Brackish Water Fishes Sewellia marmorata

This topic contains 0 replies, has 1 voice, and was last updated by  torso 11 months ago.

Viewing 15 posts - 1 through 15 (of 36 total)
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  • #303626

    torso
    Participant

    HI all

    Some first pics of the arrival yesterday. 10 specimen, 5-6 cm TL, easy to sex at this age.

     CSC_6913.JPG

     DSC_6882.JPG

    female

     CSC_6955.JPG

    a male

     CSC_6927.JPG

    a female

     CSC_6921.JPG

    males

     CSC_6941.JPG

     CSC_6949.JPG

     DSC_6857.JPG

     CSC_6924.JPG

     golden markings form an interesting pattern, communication in the dark?

    CSC_6950.JPG

     CSC_6922.JPG

     CSC_6920.JPG

     males

    DSC_6866.JPG

     CSC_6932.JPG

     CSC_6933.JPG

     CSC_6936.JPG

     another male

    DSC_6867.JPG

     females

    CSC_6954.JPG

     DSC_6872.JPG

     CSC_6947-1.JPG

     DSC_6874.JPG

     Cheers Charles

    #354518

    mikev
    Participant

    Lucky you.– I got babies, under 2.5cm. Sexing is impossible, but the fish pattern seems to be the same as yours.

    #354519

    olly
    Participant

    Charles

    Mike

    Congratulations with new interesting sewellia species. Hope you will breed them.

    Thanks for sharing.

    #354521

    mikev
    Participant

    Thanks, Olly,

    Obviously I’m not going to see any breeding for a long time….. :(

    Is this the fish that you mentioned before?

    #354522

    Plaamoo
    Participant

    Beauties Charles. Wish I had some room for them. They’re selling them here as “fireworks” sewellia. :)

    #354525

    torso
    Participant

    I’ve seen that, Jim. They look really nice. No disappointment as with S. diardi this time.

    Wet spot labeled it as Sewellia cf. marmorata. May be due to the small size or the different pattern. The only existing pic of a living specimen so far, a male of “about” 60 mm SL – first time published by Freyhof in DATZ 2000/5 – shows a more broken up-blotched specimen. This specimen must be from the 1999 campaign, not preserved. The preserved male shown in the description – 58.7 mm SL – shows a regular marbled pattern as mine do. The description based 1996 on small specimen found 1991, the mentioned one is from 1999. The description fits and I’m pretty shure that we have Sewellia marmorata  in the hobby.

    Cheers Charles

    #354526

    mikev
    Participant

    Wet spot labeled it as Sewellia cf. marmorata.

    two reasons: firstly I suggested this (I told them about the id that came from you, initially they had simply “Sewellia sp.”). secondly they claim that they were told the fish came from Laos…. it probably did not and my paranoia keeps telling me that perhaps the country is deliberately misidentified, perhaps because of the little red book?

    #354528

    olly
    Participant

    @torso said:
      golden markings form an interesting pattern, communication in the dark?

    Golden markings intrigued. Surprisingly, why do sewellias communicate in the dark (at night?)? What do you think? Do they mark the territory? Are markings needed for night spawning? Probably, caviar, leaved in the dark, is better preserved from eating by other fishes?

    #354529

    torso
    Participant

    hi Olly

    Dancing in the moonlight? They like to frolic all day anyway.

    I’m thinking of the special conditions during spawning season: turbid water, a lot of sediments, muddy water, spawning in the calmer pools/spots of the river.

    S. lineolata

    Sewellia-lineolata-DSC_6464-konv..jpg

     S. marmorata shows a “richer” structure

    Sewellia-marmorata-CSC_6941-konv..JPG

    All specimen show the same type of structure. But not perfectly identic.

    Just coincidence? Do they see the markings at all? Is it just for our fun?

    Pics converted to “mooonlight”, then darkened.

    Conclusions?

    Cheers Charles

    #354531

    torso
    Participant

    @mikev said:

    Wet spot labeled it as Sewellia cf. marmorata.

    two reasons: firstly I suggested this (I told them about the id that came from you, initially they had simply “Sewellia sp.”). secondly they claim that they were told the fish came from Laos…. it probably did not and my paranoia keeps telling me that perhaps the country is deliberately misidentified, perhaps because of the little red book?

    Ok. Nice they do changes. They came in from Vietnam. Why a part of the stock should have gone another way, I ignore. But it’s possible, given, that sizes are different. And labelling is another story. First, you must identify the species, then you should know the red list and at last you write deliberately a sp. on the list. I doubt, they even heard about S. marmorata.

    Cheers Charles

    #354532

    mikev
    Participant

    Size may be simply that they divided their loot in bags by different size for ease of shipment. No conspiracy here. Only some unhappiness; the fish was listed as 1.5″ (4cm) and they shipped me 2-2.5cm… and now there is no chance of a fair competition with Charles Koenig :P

    Laos: alternatively they may be protecting their catch location. But they might have known the species… there are some ichthyologists in Vietnam they could have asked (for example, those who took part in the original Serov’s expedition.)…. and did the fish came direct from Vietnam or via Singapore (where there are people who can check). Donno really….it is just that I’m paranoid.

    As for the gold spots… interesting. Remember that such appear in Sew01 and Sew04 in some cases too.

    #354535

    olly
    Participant

    @torso said:
    I’m thinking of the special conditions during spawning season: turbid water, a lot of sediments, muddy water, spawning in the calmer pools/spots of the river.

    Interestingly. As a fog light.

    Are these golden markings present in both sexes? In equal extent?

    @mikev said:
    As for the gold spots… interesting. Remember that such appear in Sew01 and Sew04 in some cases too.

    I see gold spots and lines in Sew04. However, in some fishes. Initially believed that females are without such spots. I may be mistaken. My group is small and it is difficult to imagine how in others.  It turns out, that these spots may be also for their communication.

    #354536

    mikev
    Participant

    With Sew04 it is the particular spot at the root of the side fin that seems to indicate males. sew-unk-m.jpg

    #354537

    torso
    Participant

    I don’t think, that it’s only restrected to males, Mike. I will have a look at my pics later.

    Here some recent of S. marmorata. I noticed, that the glass quality is lousy. Couldn’t get a sharp close up.DSC_6963.JPG

     DSC_6965.JPG

     DSC_6974.JPG

     DSC_6979.JPG

     Cheers Charles

    #354538

    mikev
    Participant

    I don’t think, that it’s only restrected to males, Mike. I will have a look at my pics later.

    It was pretty definite in the first group I had… and not in the current group. Actually the fish is a bit different so I suspect there is Sew04a and Sew04b.

    Off topic, but we need to talk about Sew02/03 again soon. I now concur that there are two types for sure, but it is not quite your 02/03 division, … perhaps there are three types.

    PS. Great photos, thanks. Very envious.

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