Breeding Bronze Corys
- Thread starter jmaster
- Start date
Hi jmaster 
Good for you! Bronze corys are an excellent choice to breed. They are reliable spawners and you have a good chance of finding an independent lfs who will buy or trade for your extra fry.
If you are just getting them, you will want to get 2 females and 3 or 4 males. The extra males ensure that the eggs are all fertilized. When you go to the lfs, if you know that they can tell the sexes apart, let the sales person select them. But if not, here's how I do it.
I look for the biggest corys in the tank first. They are probably females, so pick them out first. Then, look for the more slender fish. They will be the males. Before they are bagged or tied, look at them again from the top. You will be able to see the difference most clearly that way.
Once you get them home, it will probably be a few months until they are big enough to breed and the most important thing to do is to keep them healthy and raise them on the most nutritious food you can. This will make them grow up strong and able to produce big batches of fry.
Good for you! Bronze corys are an excellent choice to breed. They are reliable spawners and you have a good chance of finding an independent lfs who will buy or trade for your extra fry.
If you are just getting them, you will want to get 2 females and 3 or 4 males. The extra males ensure that the eggs are all fertilized. When you go to the lfs, if you know that they can tell the sexes apart, let the sales person select them. But if not, here's how I do it.
I look for the biggest corys in the tank first. They are probably females, so pick them out first. Then, look for the more slender fish. They will be the males. Before they are bagged or tied, look at them again from the top. You will be able to see the difference most clearly that way.
Once you get them home, it will probably be a few months until they are big enough to breed and the most important thing to do is to keep them healthy and raise them on the most nutritious food you can. This will make them grow up strong and able to produce big batches of fry.
Hi jmaster
I would suggest getting a 10 or 20 gallon tank to raise them and breed them in. If you can set up a 20 gallon just for them, they will reach maturity faster. You can clone a tank from your main tank for a fast cycle.
If they are still quite young, just set it up in any way that pleases you and plan to enjoy watching them for a few months. If they are almost mature, you might want to go for a more simple set up. When I want to encourage corys to spawn, I put them in a separate tank with just a half inch of sand or fine gravel at the bottom, perhaps a cave, and some kind of easily movable plants. The idea is that once they spawn, everything will be removed so that the fry can hatch in a clean bare bottom tank. Therefore, the more you put in, the more you will have to take out once the eggs appear.
I keep most of my tanks at around 76 degrees F., but it could be a little higher. Then when the time is right you can unplug the heater, give them a big water change and that is often all that is needed. In the morning, or after a day of so at around 72 degrees, once it starts warming up again they should spawn.
I would suggest that you concentrate on raising the spawning group well and condition them for a week or more on live blackworms, or frozen bloodworms, before you attempt to get them to spawn. If you are in a hurry and they spawn too young, you will have a small batch of fry taking up your tank, while if you are patient you will have a much larger one.
I would suggest getting a 10 or 20 gallon tank to raise them and breed them in. If you can set up a 20 gallon just for them, they will reach maturity faster. You can clone a tank from your main tank for a fast cycle.
If they are still quite young, just set it up in any way that pleases you and plan to enjoy watching them for a few months. If they are almost mature, you might want to go for a more simple set up. When I want to encourage corys to spawn, I put them in a separate tank with just a half inch of sand or fine gravel at the bottom, perhaps a cave, and some kind of easily movable plants. The idea is that once they spawn, everything will be removed so that the fry can hatch in a clean bare bottom tank. Therefore, the more you put in, the more you will have to take out once the eggs appear.
I keep most of my tanks at around 76 degrees F., but it could be a little higher. Then when the time is right you can unplug the heater, give them a big water change and that is often all that is needed. In the morning, or after a day of so at around 72 degrees, once it starts warming up again they should spawn.
I would suggest that you concentrate on raising the spawning group well and condition them for a week or more on live blackworms, or frozen bloodworms, before you attempt to get them to spawn. If you are in a hurry and they spawn too young, you will have a small batch of fry taking up your tank, while if you are patient you will have a much larger one.
Similar threads
Most reactions
-
480 -
330 -
233 -
218 -
210
-
180 -
172 -
161 -
137 -
131 -
126 -
106 -
101 -
89 -
77