Corydoras Adolphi Eggs

[Elaine2]

My corydoras adlphi appear to have been breeding! I noticed some eggs tonight, very low down on the background of the tank and pretty hidden away. I don't know how long they have been there as it is not a bit of the tank I normally look at. They look off-white in colour and slightly dried out - though I know this sounds a silly description of something which is uder water. They also appear to have a general patch of whiteness surrounding them, not sure if this is mould of some kind.

None of my fish has bred before and I wasn't looking out for anything. I must admit that the corys have been a bit more interested in oneanother of late than usual.

Are these eggs likely to be viable at all (my suspicion is that they may not be)? If so, what is the best thing to do with them? Any advice for what to do if this happens again?

Many thanks

 

[Cory_Dad]

My corydoras adlphi appear to have been breeding! I noticed some eggs tonight, very low down on the background of the tank and pretty hidden away. I don't know how long they have been there as it is not a bit of the tank I normally look at. They look off-white in colour and slightly dried out - though I know this sounds a silly description of something which is uder water. They also appear to have a general patch of whiteness surrounding them, not sure if this is mould of some kind.

None of my fish has bred before and I wasn't looking out for anything. I must admit that the corys have been a bit more interested in oneanother of late than usual.

Are these eggs likely to be viable at all (my suspicion is that they may not be)? If so, what is the best thing to do with them? Any advice for what to do if this happens again?

Many thanks

Congrats! maybe...

If the whiteness around them is fungus then they are dead. It could be that the eggs were laid but never fertilized. If after a day or so (not sure about adlhpi species) there isn't a dark spot within the egg then they are gone.

If the 'live' eggs are in a community tank you need to get them to a safe location; floating net or separate 'prepared' baby tank. Use a single edge razor or some other fine instrument to move them.

Drewry and/or Jollysue (plus many many others) can probably give you additional/better advice.

If they are all dead then take note of the date and look up your species to get an estimate for the next possible spawn date. At that time, keep an eye open and if they start to get frisky with each other, move them to a prepared nursery tank.

This is, of course, if you're planning to breed Corys and you have an extra tank.

Good luck (it's a rush to see Cory eggs, isn't it?!).

 

[drewry]

hi Elaine2

congrats on the eggs
the best thing is to remove them like (Cory_Dad ) said it is more tricky on the back off the tank as iv found out .if they havent been there long they will still be sticky but if they have they will fall to the bottom as you remove them so have a net handy to catch them
the fertile and unfertile eggs should look like this

if they have black dots in them simply put them into a container floating in your tank with an air stone dangling in to it,to get water circulation and stop the eggs fungusing you could allways add a little meth blue to help aswell .small round containers are best about 4inch x4inch
if they are not viable then the chances are they are still young adults and may take a few attemps to get it right as iv been haveing the same trouble with my black corydoras mine have spawned twice now with out any viable eggs

good luck with them

 

[Elaine2]

Thanks or the replies and advice. Yes, finding the eggs was rather exciting. I've had a fairly close look at the eggs - well, as close as I can given their location. Definitely no black dots and they do look a bit mouldy. I shall keep an eye on them for the next few days just in case. I do have a small tank available as a nursery tank so I think I shall get it set up in anticipation as hopefully this will happen again. I would like to breed them. The fish have definitely calmed down a lot as well. I wasn't sure whether they were just being corys or whether something else was going on and it's all too easy to imagine breeding activity when there isn't any!

 

[drewry]

Thanks or the replies and advice. Yes, finding the eggs was rather exciting. I've had a fairly close look at the eggs - well, as close as I can given their location. Definitely no black dots and they do look a bit mouldy. I shall keep an eye on them for the next few days just in case. I do have a small tank available as a nursery tank so I think I shall get it set up in anticipation as hopefully this will happen again. I would like to breed them. The fish have definitely calmed down a lot as well. I wasn't sure whether they were just being corys or whether something else was going on and it's all too easy to imagine breeding activity when there isn't any!

hi Elaine2

if your going to breed them its best to condition them first give them a bit more food than useally
pellets ,live and frozen foods, flake, tubafix wich are all high in protine then if they havent spawned again after a week or 2 perform cool water changes to incorage them
good luck with them

 

[Elaine2]

Many thanks, Drewry. I shall try that and keep you informed of any happenings.

Cheers,

Elaine

 

[drewry]

glad to help Elaine good luck