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Who's eggs?

This is a discussion on Who's eggs? within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> So what's up with the male cory....Are they just slow or not so fertile or WHAT?...

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Old 01-26-2010, 09:04 AM   #21
 
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So what's up with the male cory....Are they just slow or not so fertile or WHAT?
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Old 01-26-2010, 10:51 AM   #22
 
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Originally Posted by iamntbatman View Post
FrogHerder, many fish will lay eggs without them being fertilized. I'm not sure if bronze and peppered corydoras can hybridize (although I somewhat doubt it) so odds are that one is a female and simply laid unfertilized eggs.

I've had cories spawn pretty regularly but I've never attempted to save the eggs. The cories themselves are pretty enthusiastic about eating the eggs, so they're usually gone within 24 hours.
I figgered the odds were pretty low that the eggs are viable. Had a QT tank open, and thought I'd at least give them a chance.
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Old 01-26-2010, 04:06 PM   #23
 
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So what's up with the male cory....Are they just slow or not so fertile or WHAT?
looks like the female holds the eggs in her fins then the boy comes and fertilizes them, then she sticks them somewhere. so they would be fertilized when stuck to the glass. i will try again next time she lays eggs.
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Old 01-26-2010, 07:02 PM   #24
 
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Well mine are gonna stay in the 2g for some time, see what's gonna happen with these eggs...If not I"ll need to sit my Cory man down and we'll have a talk about this.
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Old 01-26-2010, 08:09 PM   #25
 
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The eggs should hatch in 3+ days after spawning. Dr. David Sands recommends placing the fry in a breeding net in the main tank, but an individual rearing tank is another method. He notes, as has been previously mentioned in this thread, that it is risky to leave the eggs in with the parents because they will normally readily devour them. B.
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Old 01-26-2010, 08:25 PM   #26
 
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Oh there's NO WAY they'd have survived in the 55g with the Tigers. I could see on the glass where there must have been well around 30-40eggs at night and I got like SIX out the next AM.
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Old 01-28-2010, 08:07 PM   #27
 
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Well 4 days later, no one hatched and the eggs tonight are covered in what I can only describe as cotton; so I'm assuming fungus.....soooo that didn't work

Does any one know how often/ what regularity Corys lay eggs?
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Old 01-28-2010, 08:24 PM   #28
 
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From what I've heard from people who breed them, cory eggs are so prone to fungus that they always dose an antifungal such as methylene blue as a preventative. I've never done it myself, though.

My cories would lay eggs pretty often. I'd say just about every water change (so once a week) I'd get a couple of eggs here and there. I'd get bigger batches roughly every three weeks or so.
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Old 01-28-2010, 10:19 PM   #29
 
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Well another storm is to hit us tonight (ice storm) so maybe I'll see some new eggs in the AM.

I'll have to look & check...but isn't methylene blue the same then in Ick meds???
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Old 01-29-2010, 02:28 AM   #30
 
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In some ich meds, yes. It works for both, apparently, though I've never treated ich with anything other than the standard heat+salt or in some cases, QuICK Cure, which uses formalin and malachite green.
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