Danios

barnsleyfisherman

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Over the last couple of days my water appears to have changed. By this I mean there is lots of small bits floating about in it and also small bits of 'slime' on the floor.

In the tank I have 7 danios, two of them appear to be very, very fat. I have not fed the fish since Saturday due to nitrate detected from the last water test so can't be because of this. On the gravel, and on some plants you can see a clear slime (sort of like clear fish poo) with 3-4 black dots in it. Could this be eggs??

I saw two little fish the other day, but I presume these have been eaten.

If these two fish are laying eggs, what is the best thing to do???
 
You could get a Breeding tank, put the fish into it, then they'll have the babies there and you move the fish before they eat the eggs/fry.


I haven't done it before but it's a commonly used practice that doesn't get the fry or eggs eaten.


Not sure about your water though, sorry if this wasn't that helpful.
 
Over the last couple of days my water appears to have changed. By this I mean there is lots of small bits floating about in it and also small bits of 'slime' on the floor.

In the tank I have 7 danios, two of them appear to be very, very fat. I have not fed the fish since Saturday due to nitrate detected from the last water test so can't be because of this. On the gravel, and on some plants you can see a clear slime (sort of like clear fish poo) with 3-4 black dots in it. Could this be eggs??

I saw two little fish the other day, but I presume these have been eaten.

If these two fish are laying eggs, what is the best thing to do???

Id on't know what size tank you have but assuming it is a smaller one if you nitrate is really bad like above 40ppm I would do a significant water change making sure to sift the gravel or sand so as to get any left over food. (probably like 25-30 percent of the water) I also would make sure that no food is decomposing on the bottom or in any of the plants in the tank. Usually this is what causes a nitrate spike. It does sound like your fish are producing as the danios are one of the easiest fish to breed and purely by being happy with the water quality they will do it. I would invest in a a breeding tank like suggested or keep the fish that might eat the eggs in a net (so they can't get to the eggs or fry) and let the fry develop. However you can't keep that many fish netted for months until the fry get large enough so the seperate tank idea is the best. I use a ten gallon tank and it seems to work well. If none of this works your fish will consume the eggs and fry as soon as they hatch. That's the best advice I can give!
 
Don't think the extra tank for breeding is an option, nowhere to put it really or have the money at the moment. I'll invest in a breeding net, and try that out.

Doing water changes every other day at the moment to bring the levels back down.
 
Do you know your water stats ?

Nitrate levels of 40ppm are not 'that' high - in fact in many parts of the UK it comes out of the tap at 40ppm.

Admittedly you would choose to have a lower level, but it could just be your tap water.

If you've seen baby fish, then its likely that they've been doing abit of jiggy jiggy, but some danios can look fat - mine are a case in point.
I dont over feed - just ask my other fish, but because they're faster than most other fish in your tank, danios seem to manage to get more than their fair share which can make them look huge! I havent yet figured out a way around this.
 
Not got my water stats, we have a good family run tropical fish farm just down the road and they do it for me.... I'll ask them what it is this evening when I go.

If the fish are breeding, then great. In the old tank, which I had for 4 years, never saw 1 baby fish. Only had the new one 2 weeks and seen a couple and what appears to be eggs.
 

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