Tips for breeding CPDs?
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Old 02-14-2013, 06:13 PM   #1
meowschwitz
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Tips for breeding CPDs?


I've been trying to breed several of these little guys, but so far I've been unsuccessful. They're set up in half of a ten gallon tank with a big wad of yarn above an egg trap. There's plenty of filtration with an Aquaclear 30 and two sponge filters, and I've set it up in a way that there's not too much flow where the fish are. Temp is 75F, pH is slightly above 7. I've been feeding them above twice daily with microworms, Golden Pearls, decapitated brine shrimp eggs, or frozen baby brine shrimp. They've color up nicely, but the females don't seem that large with eggs. I have 2 males and 3 females. So far no eggs, even after about two month. Any suggestions on how to get them to spawn?
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Old 02-14-2013, 10:27 PM   #2
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What you are doing sounds fine but you might want to use moss instead of yarn. If you can put 1 male and 2-3 females on the side with the breeding trap. Continue to feed them the way you have also you may need to lower the temp. just a little bit to about 72 as they prefer a low temp for spawning. After 5 or 6 days take them out of the tank or at least move them to the other half. After another 4 days fry should appear but you may have to wait a week depending when they spawned. This has worked for me and I am currently growing out fry. Hope that helps.
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Old 02-14-2013, 11:32 PM   #3
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Quote:
Originally Posted by meowschwitz View Post
, decapitated brine shrimp eggs
Not for nothing, but its decapped or decapsulated brineshrimp eggs. The egg capsule or shell is removed. They are arent eggs with their heads cut off.

Something you might try is a largish water change, just before lights out, with colder than normal water. Not TOO cool, but several degrees cooler than the tank water. I dont have any direct experience with trying this with CPD's, but it works with alot of fish.
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Old 02-15-2013, 12:27 AM   #4
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That's autocorrect for you. Decapsulated, yes. I can see decapitations at my work. (I work at a Medical Examiner's office)

I'd like to use moss, but I can't afford to buy that much, so all I have is yarn. As for cool water changes, when should I do them? I've read that doing them at night when the lights are off trigger spawning. I'll try lowering the tank water temp, too.
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Old 02-15-2013, 01:02 AM   #5
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are they breeding at all and just no fry? ive seen people have good luck with no substrate and use glass marbles instead of a sub that way the eggs fall to the bottom and parents cant get to them to eat them. lots of high protine food for the adults and a water change with slightly cooler water always seemed to work for my egg layers. cool water makes them think spring (cooler water = rain)
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Old 02-15-2013, 01:07 AM   #6
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Have you try removing the parents or the yarn to a new tank? They are very notorious for eating the baby right when they hatch and the egg are so tiny it hard to spot it.
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Old 02-15-2013, 01:08 AM   #7
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I would say before going to bed, or right around the time of lights out for the tank.
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Old 02-15-2013, 12:25 PM   #8
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I've only raised fry successfully when I removed the parents.
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Old 02-15-2013, 08:04 PM   #9
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I've breed over hundreds of cpds. They are very easy. What I did was condition the adults with flake food and bloodworms. After a week, I grab 1 male and 1 plump female. Here's the important part, put them into a bare bottom tank with white printer paper on the bottom. Tank size should be around 1-3 gallons. I used a clear plastic tub. Place the tank where there is natural sunlight (near window sill). This helps get them in the mood. I didn't use a heater or a filter. Place the pair of cpds into the tank around noon along with a fistful size of moss. Check the tank the next day at 11 am for eggs. They do lay earlier but I've noticed they stop breeding a little after 12. Eggs hatch in roughly 3 days. Hope this helps.
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Old 02-15-2013, 08:07 PM   #10
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Also if your cpds don't breed within 3 days, move them back into the main tank. They just aren't ready. I forgot to mention that the small tank size "stresses" the female to start laying eggs.
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Old 02-15-2013, 10:12 PM   #11
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Quote:
Originally Posted by Minor Threat View Post
I've breed over hundreds of cpds. They are very easy. What I did was condition the adults with flake food and bloodworms. After a week, I grab 1 male and 1 plump female. Here's the important part, put them into a bare bottom tank with white printer paper on the bottom.
Interesting. Are you saying put the paper under the tank or actually on the bottom of the tank IN the water? I am assuming under not in, but just looking for some clarification. Thanks...
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Old 02-15-2013, 10:17 PM   #12
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The only real trick is removing the parents after they spawn so they don't snack on the eggs.

I put some in a heavily planted tank for a week or two took out parrents and little fry started to appear. This round i'm trying the breeding mop method.
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Old 02-15-2013, 10:25 PM   #13
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Quote:
Originally Posted by VisionQuest28 View Post
Interesting. Are you saying put the paper under the tank or actually on the bottom of the tank IN the water? I am assuming under not in, but just looking for some clarification. Thanks...
You're spot on. On the outside. The white paper helps camouflage the eggs.
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Old 02-16-2013, 09:58 PM   #14
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Oh snap. Found myself a lone fry while feeding the adults. Moved the adults to the other side of the tank, so this little guy can grow up. We'll see if any more pop up within the next few days.
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Old 02-16-2013, 10:21 PM   #15
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Default Tips for breeding CPDs?

Instead of paper. Just make a grid on the bottom so the eggs fall through and can't be eaten
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