Breeding Zebra Danios

They are one of the easiest egg-layers to breed. The only problems you encounter are keeping the adults from eating the eggs *(just use marbles as a substrate in the breeding tank) and raising the fry because they need very small foods (baby brine shrimp, egg-layer foods, egg yolk all work).

Here's a short, concise article: http://www.aquariacentral.com/articles/zebradanio.shtml
(google :wub: )
 
As sylvia said, they are a kind of "just add water" fish to breed. It is saving the eggs and fry that can be a little trickier. Since they spawn almost continuously, a way of getting fry is to keep the bucket that you use to do the gravel cleaning with. This will invariably have a few fertile eggs in it as they will have fallen between the gravel grains and escaped predation. Keep the bucket warm and you'll commonly find fry in there a few days later.
 
I have a question too...where do they usually lay their eggs at?? I recently through in a plant in case my platy burst in the main tank and all of a sudden there seems to be one dannio constantly over there then when i did an emergency water change last night i noticed a lot of white slimy stuff on the plants where she was at. Maybe it is snail eggs? In which case I kinda hope they all die or get eaten as I had a rough time with snails at the school i worked at as they would clog everything up.

Thanks
 
Danios are egg scatterers. They may make a token gesture to spawn over plants if there are some, but many species just swim around in a group scattering.
 
Anyone know what Danio eggs look like? My danios bred before, and I did a suggested above w/ saving the gravel-vaccumed water, I waited a while (about 1 month and 1/2) and no eggs hatched. I didn't really see anything but green tiny balls, weren't sure if they were eggs or not.
 
They should hatch within 48 hours if the temp is right.. i spawned mine a few weeks ago but the heater broke so they didnt hatch, they were tiny clear balls with a white dot in the middle.. does that sound fertile?
 
hopefully my danois have bred knowi was rather desipointed when i could not see any eggs or hatching hopefully tommorw will be a better day
 
Eggs are small clear spheres. Infertile ones tend to go white after a while. The eggs, for Danios, barbs, tetras etc.), typically hatch in 24 hours at normal tank temperatures, longer if it is cooler. Important to remember though, after hatching, they feed on their yolk sack for up to a week, (depends on the temperature), before they become free swimming, at this stage, they are tiny shards of glass stuck to the side of the bucket or on the crud at the bottom.

Many a good spawn has been thrown out because people did not give the fry time to get to the more obvious free swimming stage. Another point is that although I said 24 hours for hatching, certain groups of fish can take MUCH longer, rainbows typically take 2 weeks to hatch and killies can be months.
 
Sorry im still confuzed about the colour, mine were clear, but they had a white dot in the middle, like frog spawn just white not black.. this was about a week after i gave up as they hadnt hatched. either because they were infertile or the temp was stupidly low after the heater packed up on the first night. :S
 

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