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kiwiraka

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Posts posted by kiwiraka

  1. Day Six update complete - few edits over the day. Do you guys want me to post when I have done updates or does it alert you when I edit the main post? Will only post down here to alert you if your interested otherwise I will just do the edits and keep the first post up to date for my own reference and documentation.

    Please keep posting when you update, makes following the thread much easier :)

  2. Welcome :)

    The water is not cycled, it carries very little beneficial bacteria. Most of the bacteria live in the filter media, the rest is in the substrate and on any surfaces. 

    The best way to add bacteria is to transfer media from the filter of a cycled tank into the new tanks filter. There may be a large die off due to the temperature difference. 

     

  3. The good thing about breeding koura is they do all the work for you.

    http://www.rodmorris.co.nz/keyword/freshwater/i-wR3zFzs/AA

    Until they get released and the mum gets hungry ;)

    I was joking! :D Not a fan of the coloured gravel either! (especially fluoro pink, urrrghh, shudder)

    But the experiment could be interesting, whichever way you try ('matching' or contrasting environments). I wonder if koura can even see in colour, or do they see in grey-scale or even in wavelengths we humans don't see? Anyone know?

    I was hoping you were ;) Although I could try turn the Koura pink :P

    I'm assuming they would, isn't eyeshine a sign of what colours they see? Koura have orange/red eyeshine, red light is being reflected and they see the rest of the 'visible' light spectrum?

  4. In April Kirkendoll's "How to raise and train your peppermint shrimp" (the book I have mainly been following for my breeding attempt) she has about 3 pages at the back in regards to reef lobster. Obviously not the same as this but it could be helpful to get you on the right track with it anyway (if the time came and you got it breeding)

    Thanks for that :)

    What about painting the back of the tank blue or putting a blue background on the tank?

    If it loses it's colour I'll probably do that, but I want to see whether it's genetics or habitat that's causing the colour.

  5. Perhaps you could buy it some of that 'pretty' blue gravel from a LPS to walk around on.  Maybe it will feel nice and camouflaged - and stay blue when it moults???:D

    Um..... No... Not a fan of the coloured gravel ;) I hope it does stay blue, time will tell :)

  6. Not quite right let's say the blue gene is b and the normal is B the blue crayfish must have bb a non blue crayfish will have Bb or BB if you breed it with BB none will be blue if you breed it with Bb about one quarter will be blue 

    I was assuming the normal coloured Koura was not a carrier and was BB. I think the way genetics are taught in school compared to uni is very different, in school you're taught one gene is responsible for colour, but I think it's actually a combination of genes (upward of 10?).

    Maybe someone with a bit more experience with breeding and genetics can clarify this?

     

  7. Beautiful, hopefully you find another so you can breed them.

    It sure is :)

    Not quite sure on how genetics work but since it's a recessive gene (and if my 5th form genetic understanding is correct) if I breed the blue (bb) Koura with a normal coloured (No recessive blue gene) Koura (BB) all the offspring should carry the gene (They should all be Bb) but not show the blue colouration. Then if I breed those offspring with the blue cray hopefully 50% will be blue (50% should be bb 25% Bb and 25% BB). Or if I breed two carriers (Bb+Bb) 25% would hopefully be blue (bb). All offspring of two blue Koura should be blue.

    Although finding another blue specimen would be so much easier :P

    Someone else will have a better idea but one can hope ;) Now to get it to breed...............

  8. Wow. That is an amazing colour! Natural variant or ...?

    Yes natural varient (See Adriennes links :) )

    Apparently in some populations up to 25% of the koura carry the blue gene but it only appears occasionally due to heavy predation since they don't tend to blend in too well. Although they can be much more common in deep lakes due to the low light penetration.

    I found it in the Akatarawa river, just after a flood. I'm guessing it got washed out of a smaller stream since it likely wouldn't last long with trout in the vicinity.

    Pretty cool little character doesn't seem to like tank mates so he's currently in his very own 4 foot tank with a Sunsun 303B.

     

    You didn't leave that in the stream did you boy or girl 

    Haven't checked, although I definitely will in the near future. I would love to have a go at breeding it :D

    I'm thinking best method for this would be to wait til it's bigger then get Koura that are smaller as I don't want to risk him/her getting injured or killed...

     

  9. Depends on what I find in the area. Wish list are a couple of Redfins and Bluegill's, a Torrent (bottom left of the tank is an area of high current) and a Banded since the right of the tank has very little current.  A school of Inanga would look great but they will just become fish food for the Giant & Banded Kokopu's.  Of course a cray is a must since they have so much character.

    Won't be highly stocking it as reckon variety is better then numbers.  Just one BK, Torrent & Koura and male female pair of each of the bullies.

    Sounds like a nice stocking, although the Bluegills may be hard to keep in a community tank.

  10. My father in law has the same type of marks on his gold fish in his pond, except it is on the entire head not just gill cover. I have seen it a couple times when I worked at a pet shop but I forgot exactly what it is. Clutching at strays but I think it may of been a worm or parasite, but I can not 100% remember.

    Breeding stars, although they would not cover the entire head but a much larger area of the gill covers than the marks on the cichlid.

  11. Chillers generally have a sticker on them saying something like "do not turn upside down" so I wouldnt risk it... Although Shilo seems to know what he's talking about :)

    To clean it you could probably just hook it up to the garden hose...

    Any pump or filter will work but the cleaner the water is flowing through it the less likely you are to get a blockage. Plumbing in after the sump like livingart said would be ideal, but if youre not doing a sump just hook it up to the return from a canister filter.

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