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chungsl

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    collecting wild copepods

    in General Reefkeeping_

    Posted

    sounds like an interesting idea .. anybody interested to hv a try... maybe we can arrange a collection trip ... in sg lah not hk haha

    very well,i think singapore's aquaculturing is more popular than HK's.

    in my local,very rarely people raising fish or others at home and rarely such post in forum.

    collecting wild copepods

    in General Reefkeeping_

    Posted

    FuEl, do you culture copepods? what's type ?

    iantoh, the mentioned mangrove is in H.K. i have saw the whole bench has numerous carb in low tide,i think the larval carb need enough amount of copepods food(right?), so i try to collecting by hands.

    if my net is full size and collecting with machine boat, the capture amount of copepods may reach culturing amount of rotifers in my home. this trial of collecting is mainly for experiencing the knowlege of book.

    theoretically, catching copepods can be at night or daytime.

    what's the "tompang"? =join me?

    marinebetta, if my raising fishes should eat copepods and are valuable as Frank Baensch's, i will collect copepods three times a week like him .

    it is fine that my black oc. eat rotifers and bbs, recently, i have a batch 500+ of babies are 7 days old with one stripe.no copepod need for these.

    keithtanbb, thank you for your suggestion in culturing copepod. i try to culture them.

    collecting wild copepods

    in General Reefkeeping_

    Posted

    i try to collect wild copepods by a small plankton net(only wave it in water by two hands), want to know the degree of usefulness of the small net and the abundance of copepod in particular location in winter.

    date & time: 26/12/05, 14:00, sunny day

    location: a mangrove beach

    water temp: 20 degree C(winter)

    water depth: 2 feet

    tides : rising

    i use florida Farm 50 micron plankton net (5"dia,15"long)with a 2m long rod,

    wave it by hands slowly on the surfuce of water for 15 mins ,mix the collected bottle's water up to 1L seawater.

    i roughly count the amount and type of copepod in this collection:

    1) 2-3 /ml (nauplii of copepods,i only guess it is nauplii)=90%

    2) 0.2-0.3/ml ( adult of copepods or one is bigger than nauplii )=10%

    3) total collect about 3,000 pcs copepods

    below pics are in same magnification,the rotifers are s-rotifer(110-140 micron).

    the two nauplii below the rotifers.

    just for fun in holiday! any bro. has experience in collecting wild copepods for sharing .

    post-18-1135609968.jpg

    NID HELP

    in General Reefkeeping_

    Posted

    That's very normal behaviour...the male tends to the eggs whilst the female protects the territory. She will only really begin to help about the day of hatch, which is generally around day 7 or 8 at our temps.

    Easier to take the nest out to hatch...if not, then have fun trying to catch them out :P

    i always remove my clown's nest form main ,place it in rearing tank for hatch that

    is very easy and you will get the max. amount of baby.

    you can hang the rock, place it under a airstone and blow the eggs gently.

    my pair don't delay their laying egg planing if i place the rock exactly in the same

    place and same angle after hatchig.

    so, recently, i have easily got 600+babies ...if not, then have fun trying to catch them out :P

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