Spawn Fungus Problems

SynoSteff

SynoSteff

AC Members
Jan 5, 2006
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Cape Town, South Africa
Hey everyone,

I have been trying to breed some catfish and have been able to get eggs a few times but they always seem to be taken over by spawn fungus before they can hatch. At first i tried keeping them in a floating mesh basket spread in a single layer but the fungus got them. Tried a few ways to increase the O2 and water flow but that didnt help either. Also tried making a little tumbler but the fungus still killed all my eggs.

I have been using the same tank and same setup. Should I dose with a fungicied like acriflavin a little while before to kill any fungus hiding out in the system or should I sterilize the whole thing? The problem I have with sterilizing is that the beneficial bacteria will die too and when the eggs hatch there will be some serious nitrogen spikes.

I have heard that catfish (Synodontis) eggs are quite sensitive to chemicals but could I maybe dose the tank before hand and then leave it for a few days or even put in some carbon a few days later. Any ideas? The first spawning resulted in some live fry but ever since the fungus has killed absolutely everything :(

I also tried to breed my A. ramirezi's in the same tank (a few months later) and the eggs also got taken by fungus even though the parents were there fanning and they have raised 3 clutches of eggs before with no problems. How can I fix this?

Thanks

SynoSteff
 
you could try removing the eggs and treat with methylene blue ot Hydrogen peroxide.

are you sure it's fungus?

I lost a eggs on the first angel spawns..but on subsequent spawns
in this case the eggs turned white after a few days..these were unfertlizied eggs.

I leave the eggs with the parents and they seem to get them to fry..the bolivian lose the fry to barbs..(I'm getting rid of these soon)
the angels will tend to kill the fry when they spawn again. I don;t think they are intentionally eating the fry..but they try to keep the freeswimmers near the egg clutches..and eventually wind up killing them..
 
I'm pretty sure it isn't unfertilised eggs, the Ram's have been great spawners in the past and only since they spawned in this system have they had fungus. The other eggs might be as a results of poor fertilisation but out I'm pretty sure out of the few batches I tried some most have been fertilised. I got some wrigglers a few times but they also got dominated by fungus really quickly. What I might do is set up a few different treatments next time and see what happens. Won't acriflavin at least help get the fungal spore count down a bit?

Star-Rider: Have any info on using H202? Quite keen to try that out

Thanks for the help
 
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