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Re:Mandarin Larval experiment with dry feed.
Wednesday, April 24, 2013 6:28 AM
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The next batch are ready to feed on Thursday night and another on Friday. I have had several spawns since the last trial but hatch rates and survival between Pro larvae to larvae stage have been too low to make it worth while. If I have enough larvae on Thursday I will run another trial and keep you updated.
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Re:Mandarin Larval experiment with dry feed.
Sunday, May 5, 2013 8:37 PM
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Well I've finally got both of my pairs set up and in proper condition and spawning a started this week. I've not collected eggs yet as they are actually ahead of schedule and I wasn't expecting to be at this stage until August. Naturally, I am completely unprepared in regards to live feeds. I'd like to back you up with this experiment until I have some cultures going. Do you think it's feasible to simulate what you've got going on? I hate to waste clutches of eggs until my cultures are going. Thanks Joe
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Re:Mandarin Larval experiment with dry feed.
Monday, May 6, 2013 6:42 AM
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Yes I only have a flow through that I built myself, the biggest problem with the dry feed is that it pollutes quickly. I think the key issues to resolve are keeping the food in suspension and water exchange. The feed does stay in suspension for a period of time but settles out. The GP settles slower than the Otohime (probably because of its smaller size) I do not have anything to report back with the Mandarins yet as I am getting small numbers at day 4. Running the flow through for 5 or 6 larvae seems pointless. I also lost my red female but the spotteds continue to spawn almost nightly. I had a nest of Onyx clowns that I had in the flow through from a hatch of around 80-100 I am down to 2 fish, but they have never seen a living organism and have been fed solely on Otohime A1, I skipped the GP with the clowns as they are able to take the larger food.
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Re:Mandarin Larval experiment with dry feed.
Monday, May 6, 2013 10:42 AM
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To what do you attribute the low mandarin hatch rates? Do you think it could be poor nutrition on the parents end resulting in low fertilization percentages or the fact that eggs aren't making it through the move into the system? Also, which food are larvae showing a preference to? Are mandarin fry eating both oto and gp or do you think the gp is the only one worth buying?
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Re:Mandarin Larval experiment with dry feed.
Monday, May 6, 2013 11:13 AM
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I am not getting low hatch rates, its the period between egg - prolarvae - larvae where I am losing them. I would be shocked if it were nutrition, it could be any number of factors and all I can do is change one thing at a time. I would not say they show a preference, rather the GP is more suitable as it is 5-50 microns whereas the Oto is 75-150 micron. A Tonsa naups are around the 70 micron mark so it makes sense 70 micron or lower will work better. I would imagine that within a week or two of eating the GP they could just as easily take the Oto as they develop but thats guess work as I have not got that far. But I am sure it can be done after taking shots of Mandarins with full guts who have only been offered the dry feed. I would say use the GP at least initially.
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Re:Mandarin Larval experiment with dry feed.
Tuesday, July 9, 2013 4:08 AM
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what's new ..? i aslo have 2cples of dragonets , and as you , they die at day 6/8.. i also try this king of food but i have to prepare it myself because there are no food like this in france (try to order on ebay today) the constant water quality is also my problem, in 2 or 3 hours.... it's too late!!. hatching results depend from broodstock feeding and from the male attentions , sometime this guys are too nervous too wait for the right moment ..because lady love to wait for egg issue .( sometimes i'm with 300 larvaes and i see them all die in a few hours  ) PS: (i'am a new member , from france (so sorry for my english) and did'nt find the member presentation post..where is it ? cause i hope could aslo help for this fishes) derwins
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Re:Mandarin Larval experiment with dry feed.
Wednesday, July 10, 2013 2:11 AM
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GP staying in suspension longer the Otohime A1... this is one of the selling point of GP... micro-encapsulation IIRC. Otohime "S" is similar as it is marumerized, but not even within the micron size you are seeking.
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