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Thread: Unidentified Insect

  1. #1
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    Unidentified Insect

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    Hi all,
    Please help to identify this insect found in my tank.
    THanks.
    Attached Images Attached Images
    Last edited by Justikanz; 3rd Sep 2006 at 03:03.

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    Looking from just the picture, kind of hard to indentify. Probably can post more picture preferbly at various angle and close-up.
    Last edited by Justikanz; 4th Sep 2006 at 13:29.
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    Insects don't belong in the aquarium. Removing it would be best. Chances are that it is a Dragonfly nymph.

    Cheers,
    I have dwarf cichlids in my tanks! Do you?

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    That's a damselfly larva. Very nasty critter. It will feed on shrimps and fishes.
    Fish.. Simply Irresistable
    Back to Killies... slowly.

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    Oh no!!! Any advise on how to kill it. I had a hard time trying to catch it.

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    Its very difficult to catch the larva if your tank is fully planted. It will usually hide amongst the plants. Disturb it and it will jet away. In the water it moves by propulsion if I remember correctly. Use a siphon and try to hunt it down. The fellow is crafty and it will change colour if I remember correctly. Sometimes it will just stick around some dead plant matter in the tank and stay immobile.

    Don't take chances. Just siphon out whatever you think is junk. Its possible to catch it using a net, but you have to be quick because they can sense movement in the water very quickly.

    Once you have it caught, it will try and escape so you have to be very very calm. Once its out of the water, put it in a container and then you can do whatever you want with it. Just make sure you don't touch it because it has those biting mouthparts and the bite isn't very nice..
    Last edited by Justikanz; 8th Sep 2006 at 17:20.
    Fish.. Simply Irresistable
    Back to Killies... slowly.

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    Thanks again mate!! I will be careful.

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    Well usually there's only one in a tank, since they seem to be cannibalistic towards each other. S

    If your tank is located near a window, you might want to install a screen, to prevent this from happening again. A good friend of mine lives on the 25th floor and he still gets nymphs in his tanks every now and then!!
    Fish.. Simply Irresistable
    Back to Killies... slowly.

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    Quote Originally Posted by stormhawk
    A good friend of mine lives on the 25th floor and he still gets nymphs in his tanks every now and then!!
    Gosh!! Didn't know they can get up that high!!

    Cheers,
    I have dwarf cichlids in my tanks! Do you?

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    I thought that they wouldn't go up that high, but surprisingly they do. They are strong flyers anyway.

    But that isn't good news for most of us with an exposed tank cover. I've never had any problems with dragonfly or damselfly nymphs, but I guess I'm just lucky.
    Fish.. Simply Irresistable
    Back to Killies... slowly.

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    Hi all,
    Just to update. I finally caught the insect and managed to take some pictures of it.
    Cheers.
    Attached Images Attached Images

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    Okay, now I can see it clearly. Its a dragonfly nymph, not damselfly as I've earlier mentioned. My apologies for the mix-up. Nonetheless, you've gotten rid of a potentially nasty pest.

    How did you get it out of the tank? They seldom allow themselves to be caught.

    During the recent outing to Lim Chu Kang, one of the forumers' children caught a live dragonfly nymph with his bare hands! That nymph was pretty green but I killed it with my shoe soon after.

    Oh yes, if you wish to keep this fella alive and see its transformation into a dragonfly, here's a tip. Get a small tank, plant some emergent plants like swordplants that produce aerial leaves growing above the water level. Feed it with live shrimps or baby livebearers. It will grow very quickly and soon you might have an aerial predator on the loose. Some dragonflies can be very beautiful insects. So you might get lucky.
    Fish.. Simply Irresistable
    Back to Killies... slowly.

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    I corner it a suck it out with the hose tube.
    Are you sure this will turned into a dragonfly?? it has been in my tank for about 1 month already. It does not seems to grow one bit...
    Thanks for the info mate.

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    depending on the species, it can take a few weeks to years for the nymph to mature sufficienctly to transform.

  15. #15
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    The average dragonfly spends most of its life as a nymph.

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