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Daphne - Moina; Just in....
Topic Started: Apr 1 2010, 04:25:48 PM (706 Views)
Post #1 Apr 1 2010, 04:25:48 PM Amie
I just received my first live culture of daphne moina yesterday. I'm a little nervous about them because I don't have a clue how to take care of them. They say that I should feed them roti-feast, whatever that is. They are in a brown algae, so I was thinking of putting a few under the scope and seeing what they look like and if they respond to iso.

They are very small .. smaller than I thought they would be. They are about the size of tiggerpods, but they are more transparent. They are in freshwater, but they can be adapted slowly to brackish, and then hopefully to a normal salinity over time. I've already separated a few of them and put a small amount of salt water in with them and they are still swimming, so that's a good sign. (That was before I knew they were in 100% freshwater...oops) They must be pretty tough.

There is a little tiny pile of cysts at the bottom of the container. So, they either laid them, or they hatched from the cysts and were shipped with the shells. I'm hoping they lay cysts.
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Post #2 Apr 2 2010, 06:44:27 AM Suzy
No way! We have been looking forever! Tell me how it works and I hope you get enough to share? I hear seahorse fry love them!

Hey, if they are in fw, I might have about 3000 gallons of brown water you can use....

rotifeast is that stuff that Reed Mariculture sells at the lfs. I wonder if it is just a blend of algae pastes without glycerin?
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Post #3 Apr 2 2010, 11:18:14 AM ihavefishwantmore
I think a guy I know is culturing those successfully. I think he has a pretty inexpensive food source for them. I will try to get some info if you would like.
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Post #4 Apr 2 2010, 02:48:39 PM Clint
I used to have some in fresh water, I think I feed them some yeast or yeast-product.
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Post #5 Apr 2 2010, 05:15:39 PM Larry H
Are these fresh water daphnia? I use to feed them to my freshwater fish.
I think I have an article on how to raise them I will look.
Edited by Larry H, Apr 2 2010, 05:17:08 PM.
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Post #6 Apr 2 2010, 05:26:01 PM Amie
ihavefishwantmore
Apr 2 2010, 11:18:14 AM
I think a guy I know is culturing those successfully. I think he has a pretty inexpensive food source for them. I will try to get some info if you would like.
That would be great if you could find out. I'm going to try a couple of the paste alga that I have already and see if that works. I'd swear that they are in isochrysis.

Larry, yes, these are freshwater daphnia, but not for long. They can be converted to salt water, if done slowly. I put about 50 of them in 1.012 water when I first got them and they are still alive today. I guess I could put them in a big container of low salinity water, then let it evaporate. ;) I'm so excited to have them because I have looked for these for years. Once they are converted to salt water, I think I could sell a ton of them. The only place I could find salt water moina was in Germany. But I see people asking for them all the time. Hopefully they can handle conversion.
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Post #7 Apr 2 2010, 05:26:13 PM Amie
ihavefishwantmore
Apr 2 2010, 11:18:14 AM
I think a guy I know is culturing those successfully. I think he has a pretty inexpensive food source for them. I will try to get some info if you would like.
That would be great if you could find out. I'm going to try a couple of the paste alga that I have already and see if that works. I'd swear that they are in isochrysis.

Larry, yes, these are freshwater daphnia, but not for long. They can be converted to salt water, if done slowly. I put about 50 of them in 1.012 water when I first got them and they are still alive today. I guess I could put them in a big container of low salinity water, then let it evaporate. ;) I'm so excited to have them because I have looked for these for years. Once they are converted to salt water, I think I could sell a ton of them. The only place I could find salt water moina was in Germany. But I see people asking for them all the time. Hopefully they can handle conversion.
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Post #8 Apr 5 2010, 07:45:50 PM fisher32
Amie my hero...
I spoke to Suzy a few weeks ago about getting some of the european variety. I searched all over looking for a scource.

I use to raise freshwater daphnia also, it's easy. Converting them to SW would be awsome!
I wonder if Martin Moe's vegetable juice would work to feed them? I am going to try the veggie juice for rotifers. He used the veggie juice when he raised rotifers when breeding dottybacks. He also mentioned they take on the reddish color. This may make your daphnia a pretty color also...beats the clear.

Just a thought :)
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Post #9 Apr 5 2010, 07:49:48 PM fisher32
OK here ya go Amie....
Mixing one package of dry yeast with one cup of soy flour will provide you with a great source of food for your Daphnia. Stir 1/8-1/4 teaspoon of this mixture into a cup of warm water and pour it into your Daphnia container. This will cloud the water and there is no need to feed your Daphnia again until they have filtered out and consumed all the yeast-flour (i.e. when the water has become clear again). Avoid over-feeding, since this will cause the water to go foul and kill the Daphnia.

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Post #10 Apr 5 2010, 07:53:21 PM fisher32
One more question...where did you get them from?

Thanks
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