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Hemigrammus Rodwayi

Home Forums Fresh and Brackish Water Fishes Hemigrammus Rodwayi

This topic contains 9 replies, has 4 voices, and was last updated by  Matt 9 years ago.

Viewing 10 posts - 1 through 10 (of 10 total)
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  • #300138

    Fishwife
    Participant

    I bought 5 of the above the other day, pretty little things but I’m wondering if I’ve got the right fish. All mine seem to have a pale blue stripe going along their bodies and I’ve never seen this described anywhere at all. Two of the fish shine the golden colour but the others are a definate silver but it’s the pale blue line that I’m wondering about.

    #313397

    Matt
    Keymaster

    Is it this one?

    Attached files

    #313404

    Fishwife
    Participant

    Yes it looks like that one with the dark caudal fin, but where the black line is, on mine the line is pale blue. But I do notice that there appears to be a pale blue colouring on that pic. Do you think it’s just because it’s settling in?

    #313406

    Matt
    Keymaster

    I’ve been trying to find out the identity of this fish for ages and I don’t think it’s H. rodwayi as I’ve kept both species and the body shape is different in these, plus they don’t grow as big. We used to get them in the shop as platinum tetras and they were always on the lists as H. vorderwinkleri but in the books that’s a fairly plain bronzey-looking fish. The body shape and patterning is quite similar though so it’s possible this is a form of H. vorderwinkleri infected with a parasite that causes guanin deposits to form in the scales resulting in that silvery platinum colour. Something similar causes the gold colour in some forms of H. rodwayi.

    H. cf. vorderwinkleri is probably the most accurate id imo.

    #313409

    ndc
    Participant

    nice to see youre keeping things plain and simple still matt !

    #313411

    Eyrie
    Participant

    QUOTE (ndc @ Apr 17 2009, 02:33 PM) < {POST_SNAPBACK}>
    nice to see youre keeping things plain and simple still matt ! /biggrin.gif” style=”vertical-align:middle” emoid=”:D” border=”0″ alt=”biggrin.gif” />

    #313415

    Fishwife
    Participant

    Funny you should say about the bronze colouration as the ones that are showing what I said was gold, look to be more of a bronze colouring, especially near the caudal fin.

    I’m not very good at guessing sizes but these are probably about 3 cm long, they look enormous next to the Embers but I think must be almost fully grown. The LFS I bought them from never gets size one fish only size two and three (whatever that means) but I can only guess as they never have tiny fish.

    #313417

    Matt
    Keymaster

    QUOTE (ndc @ Apr 17 2009, 02:33 PM) < {POST_SNAPBACK}>
    nice to see youre keeping things plain and simple still matt ! /laugh.gif” style=”vertical-align:middle” emoid=”:lol:” border=”0″ alt=”laugh.gif” /> What can I say I have an enquiring mind.
    #313422

    Fishwife
    Participant

    I’m glad you have Matt at least we find the answers to our doubts

    Attached files

    #313432

    Matt
    Keymaster

    Yup that’s the one. You’re right about them being almost fully-grown; I never got them much bigger than about 1.5″SL.

    This is the gold form of H. rodwayi aka H. armstrongi in some of the older books. It’s gold rather than silvery in colour. Grows to 2″+ and the eye is proportionately much bigger than in the platinum tetra.

    Pic credit: http://www.bollmoraakvarieklubb.org

    Attached files

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