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Ok so far she has had 4 sacs i have over 60+eggs from 1 corie, if the eggs dont get eaten will all the eggs hatch or are some like duds? And i also see 2 males(which are the smaller ones) going after the large female and doing the same thing i saw 4 days ago, and all of a sudden i have these eggs, whats going on here, i must have happy cories!!!! yay!

congrats...if u cant find a new breeder tank...why not use a divider to separate them from the rest... just a thought.

If they're still clear, but with the appearance of some shape forming amid the translucent material, that's a good sign. About 48 hours after spawning, you'll know for certain because you'll start to see something that, under magnification, looks like a small tadpole with two big black spots at the head end, which are the eyes. Eggs that start to develop this far are known colloquially as "eyed up" for this reason. The shape of the embryo will, when seen from the appropriate angle, look like a 'new moon' of opacity amid the translucency, then increasingly fill the translucency in a closing circular arc as the embryo grows.

Having tried to find a really good picture of a developing fish egg and failed, I'll show you instead a one day old embryo of Corydoras duplicareus courtesy of Planet Catfish ... imagine this curled up inside the egg prior to hatching and it'll give you some idea what to look for:

One day old fry


Last edited by Calilasseia at 20-Aug-2005 21:02

Panda Catfish fan and keeper/breeder since Christmas 2002

Will do, actually the eggs are still clear but i can see a circle within the egg, is that a good sign, or am i looking for them to actually turn colour??

Congratulations, and keep us posted on the process of hatching the eggs and raising fry. Good luck.

If you can get a heater and some sort of filter for it, it should work.

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I'm not your neighbor, you Bakersfield trash.

Thnx for the reply, the only other type of fish tank thats free right now is a gold fish bowl, will that work?

You'll know in 24 hours after spawening which ones are 'dud' (i.e., infertile) and which ones will become fry.

After 24 hours, tissues in the egg will differentiate into embryonic tissue (destined to become your baby fish when it hatches) and a translucent fluid in which the embryo develops (akin to the 'white' of a chicken egg). Any infertile eggs, instead of showing these signs, will turn cloudy throughout their volume, as an indication that fungus has struck.

One problem, of course, is that egg fungus can also strike otherwise healthy eggs (hence the use of antifungal agents to maximise spawn yields in breeding aquaria). Once upon a time, Methylene Blue was used for this, but now there are proprietary antifungal agents for use with eggs (e.g., Tetra's FungiStop, which I've used very successfully with my Panda Cory eggs in the past).

If you have a separate aquarium to transfer the eggs to, where they can be raised away from the hungry mouths of other fishes, then the best way of removing the eggs from the glass involves using a soft blunt edge (usually some piece of plastic). Very carefully ease the piece of plastic (an out of date credit card can be used for this) under the eggs, and slowly slide the plastic so that the eggs are now adhering to the card instead of the squarium glass. Some eggs may fall during this procedure: don't worry about this, but be prepared beforehand, and arrange for a container to be bresent under the glass into which the eggs can fall if they do fall.

Once you have your eggs detached from the glass, transfer them to a container before moving them to their nursery. NEVER expose fish eggs to atmospheric air, as this will seriously compromise their health and vitality! The BIG exception to this rule are the eggs of Copella arnoldi, the Splashing Tetra, but that's because the fish themselves have evolved to lay their eggs out of water! With Corydoras and virtually all other egg layers, however, scrupulous care should be taken to avoid exposing the eggs to air.

Once your eggs are transferred to a suitable nursery, which should be temperature matched to the main aquarium beforehand and be filled with at least some of the main aquarium water, add your antifungal agent carefully, then sit back and enjoy the appearance of some nice baby fish. Then, of course, you have all the fun of feeding and changing the babies ... more on this another time!!!



Panda Catfish fan and keeper/breeder since Christmas 2002

Congratulations. However, all said species will attempt to eat the eggs and fry. Remove the eggs asap.

Last edited by Cup_of_Lifenoodles at 19-Aug-2005 14:09

Hey i have a 6 corys emerald i beleive, and 1 has a sack hanging from her stomach? Im assuming that means there is eggs anything i need to do in specific to help my pregnant cory out and have successful pregnancy??

Yes thats what i was meaning was the sac!

well there is the cories, 3 whitecloud tetra, 2 opaline gournamies, and 1 red flame gournamie and a rhino pleco all in a 80g

Are you talking about where the female holds eggs in her pelvic fins? Then congratulations, your Brochis are spawning. Just out of curiosity, how many fish are participating?

The biggest danger to the eggs (besides fungus) is predation. Depending on what fish they are, the tankmates in there might eat some of the eggs. Any eggs that survive should hatch in about three days.

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And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."

Round 2 there is another sack full of eggs

Another question how long does it take the eggs to hatch?

100% sure the eggs just dropped out of the sac, so the eggs are on the glass, is there anything i can do? How often do the eggs actually hatch??

Cories don't get pregnant, they lay eggs around the tank in a spawning procedure. This sac thing, are you sure your fish isn't pooping?

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And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."