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Post by placerau on Sept 17, 2003 23:16:50 GMT -5
My albino cory eggs started hatching tonight, 60 hours after the eggs were laid. If they all hatch, I'll have about 100 fry.
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Post by Heather on Sept 18, 2003 11:17:25 GMT -5
100? Boy do you have your hands full!
Are Corys hard to breed?
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Post by SaraEvans1Fan on Sept 18, 2003 11:39:09 GMT -5
Very hard,and i should i tried  WAY TO GO PLACER!!!!!!! |
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Post by placerau on Sept 18, 2003 21:17:31 GMT -5
Actually some types of corys are easier than others. Albinos seem to be the easiest type to breed. Mine seem to spawn after each water change. Even better if the water change 1) lowers the tank temp by 5 degrees and 2) takes place as the barometric pressure begins to fall. This will be the second spawn that I have hatched. Usually they are in a community tank and the eggs are eaten immediately. I moved them to a 10 gallon tank to spawn this time so I could keep the eggs. It took almost a month to get them acclimated to the small tank. (they were in a 125) I did 50% water changes 2 days in a row, lowering the tank temp 5 degrees each day, (from 70 dgrees down to 60) and a storm front was moving in. A temp change of this magnitude in a short time is not recommended for most fish but it seems that the corys can handle it just fine. Within a couple hours of the second water change I noticed courting behaviour. The next morning (Monday) they were spawning. The spawning started at 9:00 in the morning and continued until late afternoon. I collected about 100 eggs and placed them in a bowl 1/2 filled with tank water, which floated in the same tank. I left about 30 eggs in the tank. I then added methelyne blue to the bowl and the tank and placed an airstone in the bowl. In the late afternoon I moved the parents back to the 125. After moving the parents I raised the tank temp to 80 over a period of about 6 hours. At 8:30 Wednesday night I noticed the first fry. There were 10 or 12 in the tank by the time I went to bed but none yet in the bowl. When I got up this morning there were 20 or so in the tank and at least 50 in the bowl. They are extremely hard to count. They are very very tiny and oh so fast as they scoot around the tank haphazardly. I suspect that by tomorrow morning, all that will hatch will have hatched. I'm trying a little experiment this time. Corys have an air bladder which requires them to surface every so often to get a gulp of air. The reason for the bowl is that with just a small depth of water, they have an easier time getting to the surface. I left some eggs in the tank to see if the fry would survive with a greater depth of water to swim through. If the tank fry survive, then I will know that next time I can just leave the eggs in the tank to hatch. So far I have seen no corpses ;D . It will take at least a month before I can move them in with any of my other fish, even longer before they will be able to live in the 125 because of the angelfish. I am feeding them microworms. I know I made a post earlier about the hazards of microworms but here is my reasoning for my change of heart in this instance ........ Cory fry are so small that even bbs are too large for them to eat. In the past I have used Liquifry which tended to pollute the tank and kill the fry. My microworm problem occured because of the age of the worms. I will now use only cultures that are 3 days old or less which should prevent this from happening again. With any other fry, including angels and swords, I will use bbs. Hope this helps anyone who is hoping to breed corys. bj, I noticed you have bronze corys ...... the albino corys are in the bronze family so if you have a male and a female you may find success if you give it another shot. Anything I missed? Let me know.
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Post by Raylene on Sept 21, 2003 17:35:40 GMT -5
Wow! Thats alot of little fry. So what are you going to do with them all? As they begin to grow, how many can you/should you have in a tank and what size tank? Guess they'll just continue to breed and spawn as they mature? Bet they're cute. No way to get a pic, huh?
~smiles and hugs~
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Post by SaraEvans1Fan on Sept 21, 2003 22:37:38 GMT -5
He has a digi. camera   ;D |
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Post by placerau on Sept 23, 2003 11:35:57 GMT -5
I overfed the fry in the bowl and killed them . There are about 40 in the tank doing well. ;D . At the size they are now, keeping 100 in a 10 gallon tank would be no problem. After about a month they would need to be moved to a 29. When they are full grown, I keep about 20 in my 125, 8 or 10 each in the 75 and the 55, and 5 or 6 in each of the 29's. After about a year they will begin to spawn.   |
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Post by placerau on Oct 4, 2003 23:02:16 GMT -5
 2 weeks old. |
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Post by jonah on Oct 5, 2003 16:07:42 GMT -5
That's too bad about the kill off, but at least you didn't lose all of them. I've got some skunk cories I'd like to try breeding some day, but the feeding requirements are a little too much for me right now.
What do you think about vinegar eels? Are they small enough for cory fry?
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Post by Heather on Oct 6, 2003 11:44:37 GMT -5
Big difference in those pics! They look really good  |
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Post by placerau on Oct 6, 2003 22:08:31 GMT -5
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Post by placerau on Oct 27, 2003 14:32:26 GMT -5
Here's a pic of the 5 week old fry ....
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Post by Heather on Oct 29, 2003 18:59:32 GMT -5
They look really nice. Are you gonna sell them when they get old enough? Or just keep em'?
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Post by placerau on Oct 31, 2003 14:44:28 GMT -5
I think I'll keep these ones. I'll sell the next batch.
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Post by placerau on Nov 2, 2003 0:23:46 GMT -5
Quint's words ring true even though I am only trying to catch a few cory fry out of 60 in a ten gallon tank. Man, these guys are fast!!
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;D