BallAquatics
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Hi polyacanthus, welcome to the forum and congratulations on your new found eggs.
I don’t generally add any chemicals to protect the eggs from fungus. Sometimes I add a few Oak leaves, but generally I just let nature take it’s course.
45 eggs sounds like the right amount. That female will be done for a week or ten days before spawning again. I would definitely remove the adults as they will eat any eggs and/or fry that they find.
Keep us posted on your progress and good luck with them!
Dennis
Hi hypnoman64, welcome to the forum.
I’ve never known the eggs to be light sensitive. I don’t go out of my way to shield them from light and have very good hatch rates.
Dennis
Hi Simon,
While I don’t have any scientific proof to back me up, I believe that is just some genetic predisposition in many of the Danionins. I have seen exactly what you speak of in many of the fish I keep. It’s not something that I see that often, but it does happen, and it happens to tank raised fish I’ve had for many generations as well as offspring from wild caught fish. Given that, I don’t think it has anything to do with lack of genetic diversity in the fish.
Just my 2 cents, for what it’s worth…..
Congratulations on your success with your CPDs! :wink:
Dennis
I’m not familiar with Hikari first bites, but I’m guessing that it’s too big for them to eat. The prepared foods I feed to newborns is as fine as dust.
Dennis
@jonfromhamilton wrote:
from about 12 fry I now have 2 left.
I wonder why the fry are dying? I am leaning towards food, I can’t think of any other reason.What are you feeding them Jon? For the first couple of weeks they need the tiniest of foods.
Dennis
Hi jonfromhamilton, welcome to the forum! Congratulations on your new fry.
I use the 5-50 micron size of golden pearls to feed newly hatched CPD’s. You can also use the Sera micron food as it is like dust too. If you put them into a small tank, green water works wonderful as well.
Best of luck with your new fry!
Dennis
Good afternoon Veritas, welcome to the forum. That’s a very lovely tank you have there. Lots of nooks and crannies to look at and visually explore.
Dennis
@twistedangel wrote:
I take it I shouldn’t be concerned about the chasing and circling?
I wouldn’t be concerned by it. Most danios are social and it’s just in their nature to play and show-off with each other. I’ve read on the web where hobbyists have said their males were very aggressive towards one another, but I’ve never seen that with any of mine. I’ve kept 10 gallon tanks with all male fish and never experienced any torn fins or other damage to the fish.
Dennis
Hi twistedangel, welcome to the forum!
In my opinion, if you keep up your water changes you should be fine with your stocking. I usually grow-out my CPD’s in 20 gallon long tanks with about 65 fish in each tank. That works out to around .3 gallons per fish. Your current set-up works out to around .55 gallons per fish.
You could try a dither fish, and even a betta, but it still might not produce the desired results. Several years ago I kept a betta for my grand son while they were in the process of relocating. He was in one of the grow-out tanks and did fine with the CPD’s.
As long as your fish are eating well, I wouldn’t worry about feeding live foods. It sounds as though you are offering them a good selection so they should be fine.
Keep us posted on your progress and we love to see photos if you have any!
Best of luck with your CPD’s – Dennis
@stuur wrote:
Now my question is if the eggs are fertilized when they fall through the mesh. I can see them drop through almost immediately after the spawning.
Excellent!!! That’s exactly what you want. The eggs that don’t fall through the mesh quickly enough usually end up being eaten.
Dennis
When using the egg trap, I generally use enough water from the breeding set-up to cover the trap in the new tank. Over the next several days add small amounts of fresh water.
Dennis
Hi Pete, welcome to the forum!
I’d love some new fish to add to my stock. Would you be interested in shipping to Ohio 45372?
Dennis
Hi MolonLabe, welcome to the forum!
@MolonLabe wrote:
First If I want to raise them to the point of being able to sell/give how many tanks am I going to need.
It really depends on how many fry you intend to raise. You could raise quite a few with just 2 or 3 tanks.
@MolonLabe wrote:
If I do need another tank will a sterilite container be safe for them?
I have kept all kinds of fish and fry in sterilite containers with very good success.
@MolonLabe wrote:
What type of filter should I have in the tank where they breed.
I use sponge filters in both my breeder set-ups and the fry tanks. These fish come from shallow still-water ponds and don’t require much water movement.
@MolonLabe wrote:
Also in the tank for really small fry do I need a sponge filter or will just an air stone due?
If you are going to raise the fry in this tank, you will need some sort of bio filtration. Sponge filters are perfect for fry tanks.
@MolonLabe wrote:
…..and lastly could someone recommend a good food for them.
I use both Golden Pearls and Sera Micron prepared foods. The Golden Pearls comes in sizes from 5-50 micron all the way up to 800 micron. Best of luck with your breeding project!
Dennis
CPD at 7 Days old
CPD at 14 Days old
CPD at 21 Days old
CPD at 28 Days old
CPD at 35 Days old
CPD at 49 Days old
CPD at 56 Days old
CPD at 63 Days old
Thanks to Glenn Axt for these wonderful photos!
Dennis
As long as the food is dust sized particles they should be able to eat it. When I feed prepared food to new fry, it’s the 5-50 micron sized golden pearls – it feels like baby powder in your fingers. Feeding newly hatched CPD fry is one of the hurdles to spawning them. The fry are so small they can be a challenge to feed. In about 10 days to two weeks they will be large enough to start eating newly hatched brine shrimp.
I try to keep my CPD’s in the high 60’s / low 70’s.
Dennis
