My Bronze Corydoras Have Spawned!

[Ethan040]

wow fab news ,looks like they've been busy,you have done the right thing ,you dont need to change the water with the eggs,they should be fine
But keep an eye on them if the eggs go white or fungus grows on them,remove these straight away or they'll affect the other eggs.

Good luck with them,hope you have little fry soon

When you say go white do they go solid white or is it a clear sort of white? none of them at the mo seem to be white or have any fur on them should a few be bad? or can they all just be fine?

Ethan

 

[Harlequins]

Eggs are normally a creamy beige colour and you can see the dark spot in the middle of the embryos,it will be noticeable if they go solid white,just remove these.

Most eggs are normally ok if they got water circulating around them

The eggs will darken over the 4/5 days and then hatch

 

[Ethan040]

Ive got some clearish ones are these bad? there quite clear compared to the others.

EDIT: The solid coloured ones had some fust on them so ive removed all these all the ones left are clearish with a visable black thing in the middle and are clean with no fust.

Also ive just rehomed a betta and its in the tank i wanted for the babies im rehoming this to a proper home i rehomed it because it needed to be, as soon as they hatch do they need a tank of there own?

Also il be using a fluval 1 can i just put some tights over it? so they don't get sucked up into it? its not got a very fast flow though.

 

[Ethan040]

BUMP!

Ive got lots of little fry now and i need to know asap do they stay in the tub in the parents tank or be moved to a 8gal of there own?

Should i do a water change? there's a couple of bad eggs in with they that must have gone bad over night also.

Please help asap there's not alot on the net about rearing the fry only how to make they spawn.

Thanks

 

[Harlequins]

Congrats on your fry

Have a read of this http/www.fishforums.net/index.php?showtopic=165155 ,its very useful

The fry should be ok in the tub until you set a tank up,they will live off their egg sac for the first day or so,so don't need feeding has such,once you start feeding them on either microworm or firstbites etc,you will then need to clean the tub/tank daily after the feeds and keep the bottom clean and do small waterchanges

Good luck

 

[Ethan040]

Thanks alot

 

[Jonty]

I may spawn my corys - seems so easy... famous last words lol

 

[Ethan040]

All the eggs have hatched now ive counted around 30 fry there tiny though and really hard to count there all active and moving around nicely ive got a piece of air tube and pushed it onto the end of a syringe and its like a syphon i cleaned the bottom of the tub up with this and ive done a 50% water change of the tub using the parents tank water after a 40% change of that tank.

Il get some pictures of them when i find my phone.

 

[Ethan040]

Ive got a 8gal tank setup for them now ive read on a few sites to leave it bare bottom but a couple say use a fine layer of sand? im guessing bare will be easier to keep clean?

Would some tights over my filter be ok? its a fluval 1.

 

[lilacamy931]

Most on here would suggest a thin layer of sand to help prevent a build up of harmful bacteria, just stir up the sand when siphoning to get the bits out

 

[Ethan040]

The fry are only about as big as a grain of sand though? lol i wouldn't be able to see them.

How thin is thin?

 

[lilacamy931]

Well I provided a very thin layer of sand, just enough to dust the bottom, unsure what others did, I still could see pygmy fry cory hopping about, if you have trouble get a magnifying glass to make the job easier My partner could never see the fry at all and only sees my 9 week old

Oh and as to the filter, the best type would be a pump driven one as these are gentle without blowing the fry around too much or sucking them in. Tights over the intake should work though keep a careful eye on it, also have the lowest setting for the outlet and check it does not throw them around too much What works for one may not work for another so do try these things out, you may find no sand works for you as well as your prepared filter

 

[Inchworm]

How thin is thin?

Hi Ethan040

1/4" or so is good. A bare bottom tank tends to get a film on it that breeds harmful bacteria.

If you have trouble seeing them, just stare into the tank. Their movement will attract your attention and will help you find them. In a week or so they will have increased in size and become more active and visible.

Sponge filters reduce the risk to fry and can be run by a small air pump. Some of them (like the prefilter shown in this link)come with a number of adaptors and can be fitted to your regular filter intake.

 

[Ethan040]

Ive just set it up before you posted ive used a elite mini filter its 200lph and has next to no flow at all it barely moves the water ive cut some cycled filter media to the shape of the media in this and put that in it and ive put sand at the bottom like you advised.

Ive put a tight over the entire filter and ive got it sideways near the top of the water ive put about 6 inches of water in the tanks its a corner tank around 8 gal but its more tall than wide and im using a small 25w heater its keeping the temps at 24.

Does this all sound ok?

 

[Inchworm]

It sounds fine, Ethan040

You don't even need to keep the temperature that warm for C. aeneus. When it comes to filtration, you don't have to be too concerned with the water flowing too much, you need to worry that they don't get sucked up while they are small. After that, it's no problem.

Even with filtration you will still want to do daily partial water changes. They produce a hormone while they are growing and if you leave it in the water it will keep them from growing as fast and sturdy as you would like. Filtration does nothing to remove this but water changes do.