Wow! My Corys Spawned Overnight!

ey2006

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Following up on my earlier thread last night, when I noticed strange behaviour from the bronze corys, when the 3 males kept chasing after the female, they were indeed mating! hehe

Never knew I'd get to witness it this early as I'm so new to tropical fish!

Anyway, I went to get some sterbai corys today for the smaller tank and when I came back, I saw all these little white dots on top corner of the tank, I had no idea what it was and then realised they were eggs! I counted them all and there were 72 eggs! I'm surprised they haven't been eaten yet!

What should I do now with the eggs? Should I take them out or leave them there?

I have no idea what to do as I've never experienced this before!
 
If you want to raise the fry you should take them out and put them in another tank. After about 3-4 days they will be free-swimming and that is when you should feed them. (baby brine shrimp i have read). Then raise them until they are about an inch big and then you can put them into your main tank.

Good Luck :thumbs: !

Edit- Make sure the food sinks and you are using a sponge filter that is not too strong and has some fine mesh or net over the intake. Also, I have a feeling I am missing something but i cant just put my finger on it...
 
I'm far from an expert on corries, but I believe you're supposed to put the eggs in a place where there is plenty of water circulation? Sure someone will be able to confirm.
 
If you want to raise the fry you should take them out and put them in another tank. After about 3-4 days they will be free-swimming and that is when you should feed them. (baby brine shrimp i have read). Then raise them until they are about an inch big and then you can put them into your main tank.

Good Luck :thumbs: !

Edit- Make sure the food sinks and you are using a sponge filter that is not too strong and has some fine mesh or net over the intake. Also, I have a feeling I am missing something but i cant just put my finger on it...
Hi Captain Retardo, thanks for your reply. I could move them to my smaller 29g tank, but there are neons, cardinals and juvenile bronze and sterbai corys there, so I'm not sure if the eggs will be any safer than in the current tank.

I just noticed that there are now another extra 50+ eggs on the other side of the glass!! I guess they kept going! :thumbs:

Can I use the breeding traps that are commonly used for breeding livebearers to house the eggs?



I'm far from an expert on corries, but I believe you're supposed to put the eggs in a place where there is plenty of water circulation? Sure someone will be able to confirm.
Thanks Jules, I think I'll leave the eggs where they are now since it doesnt seem like any of them are being eaten by the adult corys or any other fish. I'm just scared I'll damage them if I try removing them myself.
 
congratulations on the eggs!!!when my pepered corys laid eggs i removed them from the community tank (as my peppers & goldfish were eating them,i only managed to save 20).i used an old plastic credit type card & gently scraped them off the tank side (some people use razor blades or there finger).once in another bare bottomed tank i placed an air stone directly under the eggs to stop fungus from forming.mine took 5 days to hatch at a temp of 24 degrees C.out of the 20 eggs i saved 16 hatched but iv only got 12 left (there 32 days old now),so its doubtful that all the fry will hatch or survive.you dont need to add a sponge filter til there atleast 4 weeks old (from what iv been told by peope on here).

to hatch & rear 120 fry til there big enough to go into your community tanks or to give away you would need quite a big baby tank so think carefuly about how much room you have to raise them in.

im suprised none of your other fish have tried to eat the eggs but they will more than likely eat they fry when they hatch cus to them they will just look like food.

i dont think that a breeding trap would be big enough to keep that amount of eggs/fry in IMO.if i was you i would probaly remove half the eggs from the tank & put them in there own tank cus its easier to care for the fry & make sure they get enough food and are kept in clean conditions without competition from adults etc.thats my opinion anyway.

good luck with the eggs & keep us informed of what you decide to do and how things turn out! :) x
 
Wow, congrats. I just read your new thread. We have put our eggs in the live bearer trap, only thing is, when they hatch, they do tend to fall through the slits into the tank. And being so small and wriggly, get eaten by most of the fish. Our first spawn we didn't even know about, and all but one bronze cory were eaten. By the time we realized they'd bred, (probably because we were in South Africa at the time, a neighbour was looking after the tank for us then )the baby was about 2 months old. They then spawned on a regular basis. We've had over 200 eggs before, with only about 8 fungus. But after they hatch, some will die because they aren't strong enough, and others won't make it past other stages of growth. It is survival of the fittest, no matter where you have them. Out of the last 200 odd we hatched, we've got around 120. Every now and then, a couple will die, no reason either. But congrats and good luck. We have found though, that microworms are the easiest for them to eat 3-4 days after hatching. Microworms also live for about 24 hours in the tank (if they aren't eaten), so they normally wiggly towards the fry who love to eat them.

Keep us updated and best of luck :D :thumbs: :nod:
 
A quick update on the eggs, been monitoring them like a hawk over the past 72 hours. None of the eggs have hatched yet, but the 2 female bronze corys have kept producing more and more eggs! While most of the 200+ were eaten, there are now another 400+ eggs in the tank! Is too much mating a bad thing? Sometimes the corys would like a bit tired during the day, and no there aren't digging the gravel for food like they used to, they either rest on the gravel or chase each other around!!

congratulations on the eggs!!!when my pepered corys laid eggs i removed them from the community tank (as my peppers & goldfish were eating them,i only managed to save 20).i used an old plastic credit type card & gently scraped them off the tank side (some people use razor blades or there finger).once in another bare bottomed tank i placed an air stone directly under the eggs to stop fungus from forming.mine took 5 days to hatch at a temp of 24 degrees C.out of the 20 eggs i saved 16 hatched but iv only got 12 left (there 32 days old now),so its doubtful that all the fry will hatch or survive.you dont need to add a sponge filter til there atleast 4 weeks old (from what iv been told by peope on here).

to hatch & rear 120 fry til there big enough to go into your community tanks or to give away you would need quite a big baby tank so think carefuly about how much room you have to raise them in.

im suprised none of your other fish have tried to eat the eggs but they will more than likely eat they fry when they hatch cus to them they will just look like food.

i dont think that a breeding trap would be big enough to keep that amount of eggs/fry in IMO.if i was you i would probaly remove half the eggs from the tank & put them in there own tank cus its easier to care for the fry & make sure they get enough food and are kept in clean conditions without competition from adults etc.thats my opinion anyway.

good luck with the eggs & keep us informed of what you decide to do and how things turn out! :) x
Hi flumpit2, thank you for the informative reply! :) How are your baby corys doing? Are they really hard to take care of compared to other adult fish?

I've taken out the eggs and put them in a plastic container, filled with 70% of the tank water and floated the container on top of the tank, so the water maintains the tank temperature. I've also put an airstone inside the container. Is this ok for the fish or am I better off buying one of those little breeding tanks? (though these are more for guppys and plattys) I know they might be too small for a few hundred eggs (depends how many hatch and survive) but I am prepared to buy a few breeding traps if this is best for them as I cannot fit another tank in my room. I've got a smaller 29g tank, with neons, cardinals and other bronze corys, so would it be okay to house the fry there instead when they hatch? I'm assuming the neons, cardinals or the bronze corys will NOT eat the fry!

Why would I need a sponge filter for them once they reach 4 weeks old? What purpose does this serve? If I'm using a canister filter at the moment, would I still be able to use a sponge filter when the time comes?

It seems the other fish have eaten a lot of the eggs, hence why I've taken them out now. I wanted to leave them there before and let nature take its course and let the strongest survive but they have a better chance without other fish trying to eat them before they even hatch! :)

What food do you feed them and are there any special things I need to consider to keep them safe once they hatch? Like keeping a certain temperature, feeding them a few times a day, daily water changes etc?

None of the eggs have hatched yet, but half the eggs have gone from white coloured to brownish, is this a good sign? What do the fry look like once they hatch?

Sorry for all the questions, I just wanted to know more about how to handle any 'what could go wrong' situations once the eggs hatch!
 
Wow, congrats. I just read your new thread. We have put our eggs in the live bearer trap, only thing is, when they hatch, they do tend to fall through the slits into the tank. And being so small and wriggly, get eaten by most of the fish. Our first spawn we didn't even know about, and all but one bronze cory were eaten. By the time we realized they'd bred, (probably because we were in South Africa at the time, a neighbour was looking after the tank for us then )the baby was about 2 months old. They then spawned on a regular basis. We've had over 200 eggs before, with only about 8 fungus. But after they hatch, some will die because they aren't strong enough, and others won't make it past other stages of growth. It is survival of the fittest, no matter where you have them. Out of the last 200 odd we hatched, we've got around 120. Every now and then, a couple will die, no reason either. But congrats and good luck. We have found though, that microworms are the easiest for them to eat 3-4 days after hatching. Microworms also live for about 24 hours in the tank (if they aren't eaten), so they normally wiggly towards the fry who love to eat them.

Keep us updated and best of luck :D :thumbs: :nod:
Thanks for the great pointers Alex'sandCarmen'stank! :thumbs: Its appreciated. Where do you keep your 120 fry? Thats so many! How long does it usually take for them to grow to a big enough size so they can be put with the other fish in the community tank? I'm getting prepared so that when they hatch, I wont be panicing and know how to deal with the situtation! :)

What I've also noticed with the eggs is that they are all stuck together, so I'll have a group of about 10 little eggs all clumped together! Do the frys eat much? How much should I feed them and should I only feed them 3-4 days after hatching? Hopefully I'll be able to keep them in the plastic container even when they hatch as I have no breeding tank to house them in.
 

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