Dead Fry..Please Help

[d3ssen27]

Hello; I don't feel sad, cause two out of three aint bad.

My experience raising a number of batches of fry of different species is there can be a loss of 50% or more from the initial hatching over the first few months. Depends some on the species. For kribensis offspring the loss is less because I guess the parents almost always give good care. For egg scatteriers such a zebra dainos the % seemed to be higher.
I guess it is the nature of sexual reproduction to some degree. Some fry may not be a viable from the get go. We may have breeding stock that are siblings or from closely stock.

Hello; clearly these two fish are closely related enough to produce viable offspring but likely are also the results of selective breeding themselves. I have not kept these fish so may be off base about that. The parents may have already been thru several generations of sibling to sibling or cousin to cousin breeding. Just a guess.

A few years ago I had a mated pair of common angels. They produced a few broods before the female beat up the male so bad that he died from his wounds. I estimate that I raised about half the offspring to half dollar size at which point I was able to get a couple of area shops to take them. I kept the runts and those with deformed dorsal fins. The other day I noticed these fish that would have been culls where I a pro breeder had laid eggs. I am not too keen on this as they are siblings with clear phenotype issues. They ate the eggs but will lay again. I have a decision to make.

Thanks for all the info mate but this is the second batch i am getting from this pair..the first batch did not have any casualty though

 

[skjl47]

Thanks for all the info mate but this is the second batch i am getting from this pair..the first batch did not have any casualty though

Hello; So you raised 100% of a previous mating? Good job. I do not think I have ever raised 100% of a hatching. Well my guessing is way off and pointless so far. Since information is coming out a little at a time I will wait for a number of posts after more useful information is available before making another guess.

 

[d3ssen27]

Ph is 7.0
temperature is 29 degrees celsius

Water perameters would be a great

Hello; So you raised 100% of a previous mating? Good job. I do not think I have ever raised 100% of a hatching. Well my guessing is way off and pointless so far. Since information is coming out a little at a time I will wait for a number of posts after more useful information is available before making another guess.

If u need more info u can ask snytime mate..i raised a fist batch and got only 2 casualties...thats ehy i dont know what is wrong this time...i fed egg yolk for the first batch coz i did not find any hikari first bites but now i am wondering if i should go back to feeding egg yolk for this second batch as welll

 

[DorianGibs]

Can you test for the water parameters? Fry are very susceptible to parameter swings. Also how many times a day are you feeding them?

 

[skjl47]

If u need more info u can ask snytime mate.

Hello; Pretty much so far others have written much more in this thread than you as the OP. We are reduced to guessing without information. Sure I can think of lots of questions to ask, maybe dozens. My point being you have the problem and are on the scene. Those of us who wish to be helpful should not have to play "twenty questions" with you giving very short answers and dolling out information a little at time.

Perhaps I should not be so bothered but I have been involved in many such threads where an OP has a problem and we wind up teasing out information bit by bit. Go in peace mate.

 

[d3ssen27]

So i have tested the water and ph is 6.5
Temeprature is 29 degrees celsius
Gh is 10.
No ammonia peaks and nitrate is also good
I feed the fry hiari first bites twice a day
In the morning and at night
Water changes 20% a day

Can you test for the water parameters? Fry are very susceptible to parameter swings. Also how many times a day are you feeding them?

 

[d3ssen27]

Hello; Pretty much so far others have written much more in this thread than you as the OP. We are reduced to guessing without information. Sure I can think of lots of questions to ask, maybe dozens. My point being you have the problem and are on the scene. Those of us who wish to be helpful should not have to play "twenty questions" with you giving very short answers and dolling out information a little at time.

Perhaps I should not be so bothered but I have been involved in many such threads where an OP has a problem and we wind up teasing out information bit by bit. Go in peace mate.

Filtration i am using a sponge filter
Bare bottom tank with a few ceramic rings which algae grew on for the fry to graze on if there are hungry because in the middle of the day i do not feed them as i am at work
And also i put one indian almond leaf

 

[d3ssen27]

finally i think i found out what the problem was.
there are 3 or 4 big fry, i mean much much bigger than the others and they keep attacking the little ones.
i separated the bigger ones and now i dont have any more dead fry and i also keep doing a 50% water change every day.
thank you for everyone who took some time off their busy lives to read and try to find a solution for me.

 

[duanes]

Nitrate that is "good" to some aquarists, might be bad for others, especially where newly hatched fry are concerned.
To me any nitrate reading over 10ppm, willl be death sentence to many fry.
I do frequent and large enough water changes to keep nitrate between 2-5 ppm for my tanks, and feed fry 4 to 5 times per day, with small meals to keep water quality high.
And consider that a BP is already a mutant strain, so to me, expecting at least 50% of the fry , to be mutant enough not to survive would seen quite normal, traits such as compromised mouth parts, digestive tracts, screwed up stomachs, etc etc.
You may have been very lucky with your first spawn

 

[d3ssen27]

Nitrate that is "good" to some aquarists, might be bad for others, especially where newly hatched fry are concerned.
To me any nitrate reading over 10ppm, willl be death sentence to many fry.
I do frequent and large enough water changes to keep nitrate between 2-5 ppm for my tanks, and feed fry 4 to 5 times per day, with small meals to keep water quality high.
And consider that a BP is already a mutant strain, so to me, expecting at least 50% of the fry , to be mutant enough not to survive would seen quite normal, traits such as compromised mouth parts, digestive tracts, screwed up stomachs, etc etc.
You may have been very lucky with your first spawn

Yes i constantly do water changes regularly to prevent death and also maybe the first batch was indeed a lucky spawn